| Name | Mark | System[2] | From | To | Successor | Notes |
|---|
| Abbeville and Waycross Railroad | | SAL | 1889 | 1896 | Georgia and Alabama Railway | |
| Alabama and Chattanooga Railroad | | SOU | 1868 | 1877 | Alabama Great Southern Railroad | |
| Alabama Midland Railway | | ACL | 1887 | 1901 | Savannah, Florida and Western Railway | |
| Albany Bridge Company | | | 1993 | 1999 | Georgia and Florida RailNet | |
| Albany, Florida and Northern Railway | | SOU | 1889 | 1895 | Albany and Northern Railway | |
| Albany and Northern Railway | | SOU | 1895 | 1971 | Georgia Northern Railway | |
| Albany Passenger Terminal Company | | ACL/ CG/ SAL/ SOU | 1911 | | | |
| Americus and Atlantic Railroad | | | 1917 | 1926 | | |
| Americus, Preston and Lumpkin Railroad | | SAL | 1884 | 1888 | Savannah, Americus and Montgomery Railway | |
| Athens Belt Line Railroad | | SOU | 1890 | | | |
| Athens Terminal Company | | SAL | 1906 | 1981 | N/A | |
| Atlanta and Birmingham Air Line Railway | | SAL | 1903 | 1909 | Seaboard Air Line Railway | |
| Atlanta, Birmingham and Atlantic Railroad | | ACL | 1905 | 1916 | Atlanta, Birmingham and Atlantic Railway | |
| Atlanta, Birmingham and Atlantic Railway | | ACL | 1915 | 1927 | Atlanta, Birmingham and Coast Railroad | |
| Atlanta, Birmingham and Coast Railroad | | ACL | 1926 | 1946 | Atlantic Coast Line Railroad | |
| Atlanta and Charlotte Air Line Railway | | SOU | 1877 | 1996 | Norfolk Southern Railway | |
| Atlanta and Florida Railroad | | SOU | 1887 | 1893 | Atlanta and Florida Railway | |
| Atlanta and Florida Railway | | SOU | 1893 | 1895 | Southern Railway | |
| Atlanta and Hawkinsville Railroad | | SOU | 1886 | 1887 | Atlanta and Florida Railroad | |
| Atlanta, Knoxville and Northern Railway | | L&N | 1896 | 1905 | Louisville and Nashville Railroad | |
| Atlanta and LaGrange Railroad | | ACL/ L&N | 1847 | 1857 | Atlanta and West Point Railroad | |
| Atlanta and Richmond Air-Line Railway | | SOU | 1870 | 1876 | Georgia Air Line Railway | |
| Atlanta and Roswell Railroad | | SOU | 1863 | 1877 | Roswell Railroad | |
| Atlanta, Stone Mountain and Lithonia Railway | ASML | | 1907 | 1997 | N/A | |
| Atlanta Terminal Company | | ACL/ CG/ L&N/ SOU | 1903 | | | |
| Atlanta and West Point Railroad | A&WP, AWP | ACL/ L&N | 1857 | 1986 | Seaboard System Railroad | |
| Atlantic and Birmingham Railroad | | ACL | 1901 | 1903 | Atlantic and Birmingham Railway | |
| Atlantic and Birmingham Railway | | ACL | 1903 | 1906 | Atlanta, Birmingham and Atlantic Railroad | |
| Atlantic Coast Line Railroad | ACL | ACL | 1902 | 1967 | Seaboard Coast Line Railroad | |
| Atlantic and Gulf Railroad | AGLF | | 1991 | 1999 | Georgia and Florida RailNet | |
| Atlantic and Gulf Railroad | A&G | ACL | 1856 | 1879 | Savannah, Florida and Western Railway | |
| Atlantic and Gulf Short Line Railroad | | G&F | 1900 | 1907 | Georgia and Florida Railway | |
| Atlantic Short Line Railway | | CG | 1892 | 1896 | Bruton and Pineora Railway | |
| Atlantic, Valdosta and Western Railway | | SOU | 1897 | 1902 | Georgia Southern and Florida Railway | |
| Atlantic, Waycross and Northern Railroad | AW&N | | 1911 | 1924 | St. Mary's Railroad | [3] [4] |
| Augusta Belt Railway | | ACL/ L&N | 1896 | 1975 | Georgia Railroad and Banking Company | |
| Augusta and Florida Railway | | G&F | 1904 | 1910 | Georgia and Florida Railway | |
| Augusta, Gibson and Sandersville Railroad | | G&F | 1884 | 1893 | Augusta Southern Railroad | |
| Augusta and Knoxville Railroad | | ACL | 1877 | 1886 | Port Royal and Western Carolina Railway | |
| Augusta and Savannah Railroad | | CG | 1856 | 1948 | Central of Georgia Railway | |
| Augusta Southern Railroad | AUS | G&F | 1893 | 1919 | Georgia and Florida Railway | |
| Augusta, Tallahassee and Gulf Railroad | | SAL | 1888 | 1891 | Carrabelle, Tallahassee and Georgia Railroad | |
| Augusta Terminal Railway | | ACL | 1897 | 1906 | Charleston and Western Carolina Railway | |
| Augusta Union Station Company | | ACL/ L&N/ SOU | 1901 | 1969 | N/A | |
| Augusta and Waynesboro Railroad | | CG | 1838 | 1856 | Augusta and Savannah Railroad | |
| Bainbridge Northeastern Railway | | | 1907 | | | [5] [6] [7] [8] |
| Bainbridge Northern Railway | | | | | | |
| Blakely Southern Railroad | BLKS | | 1911 | 1914 | N/A | |
| Blue Ridge and Atlantic Railroad | | SOU | 1887 | 1897 | Tallulah Falls Railway | |
| Boston and Albany Railroad | | SOU | 1891 | 1895 | Georgia Northern Railway | |
| Bostwick Railroad | | | | 1911 | Greene County Railroad | |
| Bowden Lithia Springs Short Line Railroad | | | 1887 | | N/A | |
| Bowdon Railroad and Transportation Company | | | 1945 | 1953 | Bowdon Railway | |
| Bowdon Railway | | | 1953 | 1963 | N/A | |
| Bowdon Railway | | | 1910 | 1946 | Bowdon Railroad and Transportation Company | |
| Brinson Railway | | CG | 1906 | 1914 | Savannah and Northwestern Railway | |
| Broxton, Hazlehurst and Savannah Railroad | | | | 1907 | Fitzgerald, Ocilla and Broxton Railroad | |
| Brunswick and Albany Railroad | | ACL | 1861 | 1882 | Brunswick and Western Railroad | |
| Brunswick and Birmingham Railroad | | ACL | 1900 | 1904 | Atlantic and Birmingham Railway | |
| Brunswick and Florida Railroad | | ACL | 1835 | 1861 | Brunswick and Albany Railroad | |
| Brunswick and Pensacola Railroad | | | | | | |
| Brunswick and Western Railroad | | ACL | 1882 | 1901 | Savannah, Florida and Western Railway | |
| Bruton and Pineora Railway | | CG | 1897 | 1901 | Central of Georgia Railway | |
| Buena Vista Railroad | | CG | 1880 | 1885 | Buena Vista and Ellaville Railroad | |
| Buena Vista and Ellaville Railroad | | CG | 1885 | 1888 | Savannah and Western Railroad | |
| Carrabelle, Tallahassee and Georgia Railroad | | SAL | 1891 | 1906 | Georgia, Florida and Alabama Railway | |
| Cartersville and Van Wert Railroad | | SAL | 1866 | 1870 | Cherokee Railroad | |
| Central Railroad and Banking Company of Georgia | | CG | 1835 | 1895 | Central of Georgia Railway | |
| Central Railroad and Canal Company of Georgia | | CG | 1833 | 1835 | Central Railroad and Banking Company of Georgia | |
| Central of Georgia Railway | CG | CG | 1895 | 1971 | Central of Georgia Railroad | |
| Charleston and Savannah Railroad | | ACL | 1854 | 1867 | Savannah and Charleston Railroad | |
| Charleston and Savannah Railway | | ACL | 1880 | 1901 | Savannah, Florida and Western Railway | |
| Charleston and Western Carolina Railway | C&WC, CWC | ACL | 1896 | 1959 | Atlantic Coast Line Railroad | |
| Charlotte, Columbia and Augusta Railroad | | SOU | 1869 | 1894 | Southern Railway | |
| Chatham Terminal Company | | CG/ SAL | 1916 | | | Still exists as a joint subsidiary of CSX Transportation and the Norfolk Southern Railway. |
| Chattahoochee Terminal Railway | | SAL | 1902 | 1903 | Atlanta and Birmingham Air Line Railway | |
| Chattahoochee and Gulf Railroad | CHAT | | 2003 | 2006 | Chattahoochee Bay Railroad | |
| Chattahoochee Valley Railroad | | | 1895 | 1900 | Chattahoochee Valley Railway | |
| Chattahoochee Valley Railway | CHV | | 1900 | 1992 | N/A | |
| Chattanooga and Atlanta Railroad | | SOU | 1911 | 1911 | Tennessee, Alabama and Georgia Railroad | |
| Chattanooga and Durham Railroad | | CG | 1897 | 1901 | Central of Georgia Railway | |
| Chattanooga and Gulf Railroad | | CG | 1889 | 1891 | Chickamauga and Durham Railroad | |
| Chattanooga and Lookout Mountain Railway | | | | | | |
| Chattanooga, Rome and Columbus Railroad | | CG | 1887 | 1897 | Chattanooga, Rome and Southern Railroad | |
| Chattanooga, Rome and Southern Railroad | | CG | 1897 | 1901 | Central of Georgia Railway | |
| Chattanooga Southern Railroad | | SOU | 1896 | 1911 | Tennessee, Alabama and Georgia Railroad | |
| Chattanooga Southern Railway | | SOU | 1887 | 1895 | Chattanooga Southern Railroad | |
| Cherokee Railroad | | SAL | 1870 | 1879 | Cherokee Iron Company | |
| Cherokee Iron Company | | SAL | 1873 | 1882 | East and West Railroad of Alabama | |
| Chickamauga and Durham Railroad | | CG | 1891 | 1897 | Chattanooga and Durham Railroad | |
| Cincinnati and Georgia Railroad | | SOU | 1881 | 1881 | East Tennessee, Virginia and Georgia Railroad | |
| Collins and Glennville Railroad | | | 1921 | 1941 | N/A | |
| Collins and Ludowici Railroad | | | 1920 | 1922 | Collins and Glennville Railroad | |
| Collins and Reidsville Railroad | | | 1895 | 1906 | Georgia Coast and Piedmont Railroad | |
| Colonel's Island Railroad | CISD | | 1969 | 1998 | Golden Isles Terminal Railroad | |
| Columbia and Augusta Railroad | | SOU | 1864 | 1869 | Charlotte, Columbia and Augusta Railroad | |
| Columbus and Florida Railway | | SAL | 1885 | 1886 | Columbus Southern Railway | |
| Columbus and Rome Railroad | | CG | 1879 | 1882 | Columbus and Rome Railway | |
| Columbus and Rome Railway | | CG | 1882 | 1888 | Savannah and Western Railroad | |
| Columbus Southern Railway | | SAL | 1886 | 1896 | Columbus and Southern Railway | |
| Columbus and Southern Railway | | SAL | 1896 | 1896 | Georgia and Alabama Railway | |
| Columbus and Western Railway | | CG | 1883 | 1888 | Savannah and Western Railroad | |
| Covington and Macon Railroad | | CG | 1885 | 1891 | Macon and Northern Railroad | |
| Cuyler and Woodburn Railroad | | | 1894 | 1897 | Savannah and Statesboro Railway | |
| Dalton and Gadsden Railroad | | SOU | 1854 | 1859 | Dalton and Jacksonville Railroad | |
| Dalton and Jacksonville Railroad | | SOU | 1859 | 1866 | Selma, Rome and Dalton Railroad | |
| Darien Short Line Railroad | | | 1885 | 1894 | Darien and Western Railroad | |
| Darien and Western Railroad | | | 1894 | 1906 | Georgia Coast and Piedmont Railroad | |
| Dooly Southern Railway | | | | | | |
| Douglas, Augusta and Gulf Railway | | G&F | 1905 | 1907 | Georgia and Florida Railway | |
| Douglas and McDonald Railroad | | | | | | |
| Dover and Statesboro Railroad | | CG | 1889 | 1901 | Central of Georgia Railway | |
| Dublin and Southwestern Railroad | | CG | 1904 | 1907 | Wrightsville and Tennille Railroad | |
| Dublin and Wrightsville Railroad | | CG | 1885 | 1886 | Wrightsville and Tennille Railroad | |
| East Georgia Railway | | | 1916 | | | |
| East Georgia and Florida Railroad | | ACL | 1881 | 1888 | Savannah, Florida and Western Railway | |
| East Tennessee and Georgia Railroad | | SOU | 1848 | 1869 | East Tennessee, Virginia and Georgia Railroad | |
| East Tennessee, Virginia and Georgia Railroad | SOU | | 1869 | 1886 | East Tennessee, Virginia and Georgia Railway | |
| East Tennessee, Virginia and Georgia Railway | SOU | | 1886 | 1894 | Southern Railway | |
| East and West Railroad | | SAL | 1896 | 1903 | Atlanta and Birmingham Air Line Railway | |
| East and West Railroad of Alabama | | SAL | 1882 | 1893 | East and West Railroad | |
| Eatonton Branch Railroad | | CG | 1850 | 1896 | Middle Georgia and Atlantic Railway | |
| Eatonton and Machen Railroad | | CG | 1889 | 1889 | Middle Georgia and Atlantic Railway | |
| Elberton Air Line Railroad | | SOU | 1871 | 1908 | Elberton Southern Railway | |
| Elberton and Eastern Railroad | E&E | ACL/ L&N | 1916 | 1933 | N/A | |
| Elberton and Eastern Railway | | ACL/ L&N | 1911 | 1916 | Elberton and Eastern Railroad | |
| Elberton Southern Railway | | SOU | 1908 | 1996 | Norfolk Southern Railway | |
| Ellijay Railroad | | L&N | 1854 | 1859 | Marietta, Canton and Ellijay Railroad | |
| Empire and Dublin Railroad | | CG | 1888 | 1892 | Oconee and Western Railroad | |
| Fitzgerald, Ocilla and Broxton Railroad | | | 1907 | | | |
| Fitzgerald, Ocmulgee and Red Bluff Railway | | | | | | |
| Flint River and Gulf Railway | | SOU | 1901 | 1907 | Gulf Line Railway | |
| Flint River and Northeastern Railroad | FR&N | | 1903 | 1946 | N/A (affiliated with Georgia Northern Railway) | |
| Florida Central Railroad | | | 1907 | 1914 | N/A (portion in Florida sold to Savannah, Florida and Western Railway) | |
| Florida Central and Peninsular Railroad | | SAL | 1892 | 1903 | Seaboard Air Line Railway | |
| Florida Midland and Georgia Railroad | | G&F | 1884 | 1894 | Valdosta Southern Railway | |
| Florida Northern Railroad | | SAL | 1892 | 1893 | Florida Central and Peninsular Railroad | |
| Flovilla and Indian Springs Railway | | | 1897 | | | |
| Foy Railroad | | | | | | |
| Gainesville, Jefferson and Southern Railroad | | ACL/ L&N, SAL | 1872 | 1904 | Gainesville Midland Railway, Monroe Railroad | |
| Gainesville Midland Railroad | GM | SAL | 1936 | | | Still exists as a subsidiary of CSX Transportation. On August 6, 2010, notice was published of the intent to merge the Gainesville Midland Railroad into CSX Transportation, effective August 20, 2010.[9] |
| Gainesville Midland Railway[10] | | SAL | 1904 | 1938 | Gainesville Midland Railroad | |
| Gainesville and Northwestern Railroad | | | 1912 | 1934 | N/A | |
| Gate City Terminal Company | | ACL | 1906 | 1907 | Georgia Terminal Company | |
| Georgia Railroad | GA | ACL/ L&N | 1881 | 1982 | Seaboard Coast Line Railroad | |
| Georgia Railroad | | ACL/ L&N | 1833 | 1835 | Georgia Railroad and Banking Company | |
| Georgia Railroad and Banking Company | | ACL/ L&N | 1835 | 1982 | Seaboard Coast Line Railroad | |
| Georgia Air Line Railroad | | SOU | 1856 | 1870 | Atlanta and Richmond Air-Line Railway | |
| Georgia Air Line Railway | | SOU | 1877 | 1877 | Atlanta and Charlotte Air Line Railway | |
| Georgia and Alabama Railroad | GAAB | | 1989 | 1995 | Georgia Southwestern Railroad | |
| Georgia and Alabama Railroad | | SOU | 1854 | 1866 | Selma, Rome and Dalton Railroad | |
| Georgia and Alabama Railway | | SAL | 1895 | 1902 | Seaboard Air Line Railway | |
| Georgia and Alabama Terminal Company | | SAL | 1898 | | | |
| Georgia, Ashburn, Sylvester and Camilla Railway | | SOU | 1922 | 1971 | Georgia Northern Railway | |
| Georgia, Carolina and Northern Railway | | SAL | 1886 | 1901 | Seaboard Air Line Railway | |
| Georgia Coast and Piedmont Railroad | | | 1906 | 1919 | Collins and Glennville Railroad | |
| Georgia Eastern Railroad | GERY | | 1987 | 1988 | Georgia Woodlands Railroad | |
| Georgia Eastern Railway | | | | | Bainbridge Northeastern Railway | |
| Georgia and Florida RailNet | GFRR | | 1999 | 2005 | Georgia and Florida Railway | |
| Georgia and Florida Railroad | GFRR | | 1995 | 1999 | Georgia and Florida RailNet | |
| Georgia and Florida Railroad | G&F | G&F (SOU) | 1926 | 1963 | Georgia and Florida Railway | |
| Georgia and Florida Railway | G&F, GF | SOU | 1963 | 1971 | Central of Georgia Railroad | |
| Georgia and Florida Railway | G&F | G&F | 1906 | 1926 | Georgia and Florida Railroad | |
| Georgia, Florida and Alabama Railroad | GF&A | SAL | 1927 | 1974 | Seaboard Coast Line Railroad | |
| Georgia, Florida and Alabama Railway | GF&A | SAL | 1901 | 1928 | Georgia, Florida and Alabama Railroad | |
| Georgia and Florida Terminal Company | | G&F | 1910 | 1920 | Georgia and Florida Railway | |
| Georgia Great Southern Railroad | GGS | | 1991 | 1995 | Georgia Southwestern Railroad | |
| Georgia Midland Railway | | SOU | 1896 | 1996 | Norfolk Southern Railway | |
| Georgia Midland and Gulf Railroad | | SOU | 1885 | 1896 | Georgia Midland Railway | |
| Georgia Midland Terminal Company | | SOU | 1890 | 1941 | Southern Railway | |
| Georgia Northern Railway | GANO | SOU | 1894 | 1993 | Georgia Southern and Florida Railway | |
| Georgia Pacific Railroad | | SOU | 1876 | 1882 | Georgia Pacific Railway | |
| Georgia Pacific Railway | | SOU | 1882 | 1894 | Southern Railway | |
| Georgia Western Railroad | | SOU | 1854 | 1877 | Georgia Pacific Railroad | |
| Georgia Pine Railway | | SAL | 1895 | 1901 | Georgia, Florida and Alabama Railway | |
| Georgia Southern Railroad | | SOU | 1875 | 1880 | East Tennessee, Virginia and Georgia Railroad | |
| Georgia Southern and Florida Railroad | | SOU | 1881 | 1895 | Georgia Southern and Florida Railway | |
| Georgia Southwestern and Gulf Railroad | GS&G | SOU | 1906 | 1942 | N/A | Leased the Albany and Northern Railway. |
| Georgia Terminal Company | | ACL | 1907 | 1916 | Atlanta, Birmingham and Atlantic Railway | |
| Girard Railroad | | CG | 1845 | 1854 | Mobile and Girard Railroad | |
| Greene County Railroad | GCY | | 1911 | 1941 | N/A | |
| Greenville and Newnan Railway | | CG | 1905 | 1905 | Central of Georgia Railway | |
| Griffin, Monticello and Madison Railroad | | | 1870 | 1891 | N/A | |
| Gulf Line Railway | | SOU | 1907 | 1913 | Hawkinsville and Florida Southern Railway | |
| Hartwell Railroad | | | 1879 | 1898 | Hartwell Railway | |
| Hartwell Railway | HRT | | 1898 | 1990 | Hartwell Railroad | |
| Hawkinsville and Florida Southern Railway | | SOU | 1896 | 1922 | Georgia, Ashburn, Sylvester and Camilla Railway | |
| Hawkinsville and Western Railroad | | | | | | |
| Hiwassee Railroad | | SOU | 1847 | 1848 | East Tennessee and Georgia Railroad | |
| Indian Springs and Flovilla Railroad | | | 1881 | 1897 | Flovilla and Indian Springs Railway | |
| Iron Belt Railroad | | | | 1903 | N/A | |
| Lakeland Railway | | | 1928 | 1957 | N/A | |
| Lawrenceville Branch Railroad | | SOU | 1877 | 1920 | N/A | |
| Lexington Terminal Railroad | | ACL/ L&N | 1887 | 1947 | N/A | |
| Liberty City, Glennville and Manassas Railway | | | | 1905 | Reidsville and Southeastern Railroad | |
| Lithonia and Arabia Mountain Railway | | | 1913 | 1935 | N/A | |
| Live Oak, Perry and Georgia Railroad | | | 1995 | 1999 | Georgia and Florida RailNet | |
| Live Oak, Perry and South Georgia Railway | LPSG | SOU | 1971 | 1993 | Georgia Southern and Florida Railway | |
| Loganville and Lawrenceville Railroad | | SAL | 1898 | 1902 | Seaboard Air Line Railway | |
| Louisville and Nashville Railroad | L&N, LN | L&N | 1905 | 1983 | Seaboard System Railroad | |
| Louisville Branch Railroad | | CG | 1872 | 1879 | Louisville and Wadley Railroad | |
| Louisville and Wadley Railroad | L&WD | CG | 1879 | 1961 | Louisville and Wadley Railway | |
| Macon and Atlantic Railway | | CG | 1890 | 1892 | Atlantic Short Line Railway | |
| Macon and Augusta Railroad | | ACL/ L&N | 1866 | 1880 | Georgia Railroad and Banking Company | |
| Macon and Birmingham Railroad | | | 1888 | 1895 | Macon and Birmingham Railway | |
| Macon and Birmingham Railway | | | 1896 | | | |
| Macon and Brunswick Railroad | | SOU | 1856 | 1881 | Cincinnati and Georgia Railroad | |
| Macon and Dublin Railroad | | SAL | 1885 | 1890 | Macon, Dublin and Savannah Railroad | |
| Macon, Dublin and Savannah Railroad | MD&S | SAL | 1890 | 1958 | Seaboard Air Line Railroad | |
| Macon and Northern Railroad | | CG | 1891 | 1894 | Macon and Northern Railway | |
| Macon and Northern Railway | | CG | 1894 | 1895 | Central of Georgia Railway | |
| Macon Terminal Company | MTCO | CG/ SOU | 1914 | | | |
| Macon and Western Railroad | | CG | 1845 | 1872 | Central Railroad and Banking Company of Georgia | |
| Marietta, Canton and Ellijay Railroad | | L&N | 1859 | 1870 | Marietta and North Georgia Railroad | |
| Marietta and North Georgia Railroad | | L&N | 1870 | 1887 | Marietta and North Georgia Railway | |
| Marietta and North Georgia Railway | | L&N | 1887 | 1895 | Atlanta, Knoxville and Northern Railway | |
| McRae Terminal Railway | | SAL | 1905 | | | |
| Memphis Branch Railroad | | | 1868 | 1877 | N/A | |
| Memphis Branch Railroad and Steamboat Company of Georgia | | L&N | 1839 | 1850 | Rome Railroad | |
| Middle Georgia and Atlantic Railway | | CG | 1889 | 1896 | Central of Georgia Railway | |
| Midland Railway | | G&F | 1915 | 1923 | Statesboro Northern Railway | |
| Midville, Swainsboro and Red Bluff Railroad | | G&F | 1888 | 1900 | Atlantic and Gulf Short Line Railroad | |
| Milledgeville Railroad | | ACL/ L&N | 1837 | 1866 | Macon and Augusta Railroad | |
| Milledgeville Railway | | ACL/ L&N | 1896 | 1972 | N/A | |
| Milledgeville and Asylum Dummy Railroad | | ACL/ L&N | 1888 | 1893 | Old Capital Railway | |
| Milledgeville and Gordon Railroad | | CG | 1847 | 1859 | Central Railroad and Banking Company of Georgia | |
| Milledgeville Turnpike or Railroad Company | | CG | 1840 | 1847 | Milledgeville and Gordon Railroad | |
| Millen and Southern Railway | | G&F | 1890 | 1897 | Millen and Southwestern Railroad | |
| Millen and Southwestern Railroad | | G&F | 1897 | 1907 | Georgia and Florida Railway | |
| Milltown Air Line Railway | | | 1903 | 1928 | Lakeland Railway | |
| Milstead Railroad | MLST | | 1909 | 1959 | | |
| Mobile and Girard Railroad | | CG | 1854 | 1895 | Central of Georgia Railway | |
| Monroe Railroad | | ACL/ L&N | 1904 | 1975 | Georgia Railroad and Banking Company | |
| Monroe Railroad | | CG | 1833 | 1836 | Monroe Railroad and Banking Company | |
| Monroe Railroad and Banking Company | | CG | 1836 | 1845 | Central Railroad and Banking Company of Georgia | |
| Montgomery Railroad | | ACL/ L&N | 1834 | 1842 | Montgomery and West Point Railroad | |
| Montgomery and West Point Railroad | | ACL/ L&N | 1843 | 1870 | Western Railroad of Alabama | |
| Nashville and Chattanooga Railroad | | L&N | 1845 | 1873 | Nashville, Chattanooga and St. Louis Railway | |
| Nashville, Chattanooga and St. Louis Railway | N&C, NC | L&N | 1873 | 1957 | Louisville and Nashville Railroad | |
| Nashville and Sparks Railroad | | G&F | 1900 | 1907 | Georgia and Florida Railway | |
| North Eastern Railroad | | SOU | 1854 | 1895 | Southern Railway | |
| North and South Railroad of Georgia | | CG | 1870 | 1878 | Columbus and Rome Railroad | |
| Ocilla and Irwinville Railroad | | ACL | 1900 | 1903 | Brunswick and Birmingham Railroad | |
| Ocilla, Pinebloom and Valdosta Railroad | | G&F | 1905 | 1906 | Douglas, Augusta and Gulf Railway | |
| Ocilla Southern Railroad | OSO | | 1908 | 1924 | N/A | |
| Ocilla and Valdosta Railroad | | | | | | |
| Ocilla and Worth Railroad | | | | | | |
| Oconee and Western Railroad | | CG | 1892 | 1899 | Wrightsville and Tennille Railroad | |
| Offerman and Western Railroad | | ACL | 1899 | 1902 | Brunswick and Birmingham Railroad | |
| Ogeechee Railway | OGEE | | 1989 | | | Still exists as a lessor of the Georgia Midland Railroad and Heart of Georgia Railroad. |
| Old Capital Railway | | ACL/ L&N | 1893 | 1896 | Milledgeville Railway | |
| Pelham and Havana Railroad | | | 1906 | 1924 | N/A | |
| Plant System | | ACL | 1894 | 1902 | Atlantic Coast Line Railroad | |
| Port Royal Railroad | | ACL | 1859 | 1878 | Port Royal and Augusta Railway | |
| Port Royal and Augusta Railway | | ACL | 1878 | 1896 | Charleston and Western Carolina Railway | |
| Port Royal and Western Carolina Railway | | ACL | 1887 | 1896 | Charleston and Western Carolina Railway | |
| Raleigh and Gaston Railroad | | SAL | 1889 | 1900 | Seaboard Air Line Railway | |
| Register and Glenville Railroad | | | | 1916 | East Georgia Railway | |
| Reidsville and Southeastern Railroad | | | 1905 | 1906 | Georgia Coast and Piedmont Railroad | |
| Richmond and Danville Railroad | | SOU | 1879 | 1894 | Southern Railway | |
| Rogers and Summit Railroad | | G&F | 1889 | 1889 | Millen and Southern Railway | |
| Rome Railroad | | L&N | 1850 | 1896 | Nashville, Chattanooga and St. Louis Railway | |
| Rome and Carrollton Railroad | | CG | 1881 | 1887 | Chattanooga, Rome and Columbus Railroad | |
| Rome and Decatur Railroad | | SOU | 1883 | 1889 | East Tennessee, Virginia and Georgia Railway | |
| Rome and Northern Railroad | R&N | | 1909 | 1923 | Rome and Northern Railway | |
| Rome and Northern Railway | | | 1923 | 1924 | N/A | |
| Roswell Railroad | | SOU | 1880 | 1920 | Roswell Branch Railroad | |
| Roswell Branch Railroad | | | 1920 | 1921 | N/A | |
| St. Mary's and Kingsland Railroad | | | 1906 | 1911 | Atlantic, Waycross and Northern Railroad | |
| Sandersville and Tennille Railroad | | G&F | 1875 | 1894 | Augusta Southern Railroad | |
| Savannah and Albany Railroad | | ACL | 1847 | 1854 | Savannah, Albany and Gulf Railroad | |
| Savannah, Albany and Gulf Railroad | | ACL | 1854 | 1863 | Atlantic and Gulf Railroad | |
| Savannah, Americus and Montgomery Railway | | SAL | 1888 | 1895 | Georgia and Alabama Railway | |
| Savannah and Atlanta Railway | SA | CG | 1915 | 1971 | Central of Georgia Railroad | |
| Savannah and Atlantic Railroad | | CG | 1890 | 1895 | Central of Georgia Railway | |
| Savannah, Augusta and Northern Railway | | | 1906 | 1910 | Midland Railway | |
| Savannah and Charleston Railroad | | ACL | 1867 | 1880 | Charleston and Savannah Railway | |
| Savannah and Columbus Railway | | SAL | 1888 | 1888 | Savannah and Western Railroad | |
| Savannah, Dublin and Western Short Line Railway | | CG | 1886 | 1889 | Savannah and Western Railroad | |
| Savannah, Florida and Western Railway | | ACL | 1876 | 1902 | Atlantic Coast Line Railroad | |
| Savannah, Griffin and North Alabama Railroad | | CG | 1854 | 1890 | Savannah and Western Railroad | |
| Savannah and Northwestern Railway | S&NW | CG | 1914 | 1917 | Savannah and Atlanta Railway | |
| Savannah River Terminal Company | | ACL/ L&N | 1916 | 1990 | CSX Transportation | |
| Savannah and Southern Railway | | | | | | |
| Savannah State Docks Railroad | SSDK | | 1952 | 1998 | Savannah Port Terminal Railroad | |
| Savannah and Statesboro Railway | | G&F | 1897 | 1933 | Statesboro Terminal Company | |
| Savannah, Thunderbolt and Isle of Hope Railway | | | | | | |
| Savannah and Tybee Island Railway | | CG | 1885 | 1889 | Savannah and Atlantic Railroad | |
| Savannah Union Railroad and Terminal Company | | CG | 1912 | 1914 | Savannah and Northwestern Railway | |
| Savannah Union Station Company | | ACL/ SAL/ SOU | 1900 | | | |
| Savannah Valley Railroad | | CG | 1908 | 1910 | Brinson Railway | |
| Savannah and Western Railroad | | CG | 1885 | 1895 | Central of Georgia Railway | |
| Seaboard Air Line Railroad | SAL | SAL | 1946 | 1967 | Seaboard Coast Line Railroad | |
| Seaboard Air Line Railway | | SAL | 1900 | 1945 | Seaboard Air Line Railroad | |
| Seaboard Air Line System | | SAL | 1893 | 1900 | Seaboard Air Line Railway | |
| Seaboard Air Line Belt Railroad | | SAL | 1892 | 1901 | Seaboard Air Line Railway | |
| Seaboard Coast Line Railroad | SCL | | 1967 | 1983 | Seaboard System Railroad | |
| Seaboard and Roanoke Railroad | | SAL | 1889 | 1900 | Seaboard Air Line Railway | |
| Seaboard System Railroad | SBD | | 1983 | 1986 | CSX Transportation | |
| Selma, Rome and Dalton Railroad | | SOU | 1866 | 1874 | Georgia Southern Railroad | |
| Shearwood Railway | | | 1912 | 1937 | N/A | |
| Smithonia, Danielsville and Carnesville Railroad | | | 1889 | | | |
| Smithonia and Dunlap Railroad | | | | | | |
| South Bound Railroad | | SAL | 1888 | 1901 | Seaboard Air Line Railway | |
| South Carolina Railroad | | SOU | 1843 | 1881 | South Carolina Railway | |
| South Carolina Railway | | SOU | 1881 | 1894 | South Carolina and Georgia Railroad | |
| South Carolina and Georgia Railroad | | SOU | 1894 | 1902 | Southern Railway – Carolina Division | |
| South Georgia Railway | | SOU | 1896 | 1971 | Live Oak, Perry and South Georgia Railway | |
| South Georgia and Florida Railroad | | ACL | 1857 | 1868 | Atlantic and Gulf Railroad | |
| Southern Railway | SOU | SOU | 1894 | 1990 | Norfolk Southern Railway | |
| Southern Railway – Carolina Division | | SOU | 1902 | 1996 | Norfolk Southern Railway | |
| Southwestern Railroad | | CG | 1845 | | | Still exists as a lessor of Norfolk Southern Railway operating subsidiary Central of Georgia Railroad. |
| Sparks, Moultrie and Gulf Railroad | | | | 1903 | N/A | |
| Sparks-Western Railroad | | G&F | 1908 | 1911 | Georgia and Florida Railway | |
| Statenville Railway | | | 1910 | 1924 | N/A | |
| Statesboro Northern Railway | | G&F | 1924 | 1951 | N/A | |
| Statesboro Terminal Company | | G&F | 1933 | 1951 | N/A | |
| Stillmore Air Line Railway | | CG | 1892 | 1906 | Wadley Southern Railway | |
| Sylvania Railroad | | CG | 1884 | 1902 | Sylvania Central Railway | |
| Sylvania Railway | | | 1935 | 1944 | N/A (leased the Sylvania Central Railway) | |
| Sylvania Central Railway | SYC | CG | 1903 | 1954 | N/A | |
| Sylvania and Girard Railroad | | | 1905 | 1915 | N/A (leased the Sylvania Central Railway) | |
| Talbotton Branch Railroad | | | 1872 | 1881 | Talbotton Railroad | |
| Talbotton Railroad | | | 1881 | 1956 | N/A | |
| Tallulah Falls Railway | TF | SOU | 1898 | 1961 | N/A | |
| Tennessee, Alabama and Georgia Railroad | TA&G, TAG | SOU | 1922 | | | Still exists as a subsidiary of the Norfolk Southern Railway; all Georgia trackage has been leased to the Chattooga and Chickamauga Railway since 1989. |
| Tennessee, Alabama and Georgia Railway | | SOU | 1911 | 1922 | Tennessee, Alabama and Georgia Railroad | |
| Tennessee and Cohutta Railroad | | SOU | 1882 | 1882 | Tennessee State Line Railroad | |
| Tennessee State Line Railroad | | SOU | 1882 | 1886 | East Tennessee, Virginia and Georgia Railroad | |
| Thomaston and Barnesville Railroad | | CG | 1839 | 1860 | Upson County Railroad | |
| Thomasville Railroad | | SAL | 1879 | 1888 | Augusta, Tallahassee and Gulf Railroad | |
| Thomasville, Tallahassee and Gulf Railroad | | SAL | 1882 | 1888 | Augusta, Tallahassee and Gulf Railroad | |
| Tifton and Moultrie Railway | | | | 1903 | N/A | |
| Tifton and Northeastern Railroad | | ACL | 1891 | 1903 | Atlantic and Birmingham Railway | |
| Tifton Terminal Company | | | | | | |
| Tifton, Thomasville and Gulf Railway | | ACL | 1897 | 1903 | Atlantic and Birmingham Railway | |
| Union Point and White Plains Railroad | | ACL/ L&N | 1886 | 1927 | N/A | |
| Upson County Railroad | | CG | 1860 | 1914 | Central of Georgia Railway | |
| Valdosta, Moultrie and Western Railroad | | | 1909 | 1917 | Valdosta, Moultrie and Western Railway | |
| Valdosta, Moultrie and Western Railway | | | 1917 | | | |
| Valdosta Southern Railroad | VSO | | 1951 | 1992 | Valdosta Railway | |
| Valdosta Southern Railway | | G&F | 1894 | 1907 | Georgia and Florida Railway | |
| Villa Rica Branch Railway | | SOU | 1901 | 1902 | Southern Railway | |
| Wadley and Mount Vernon Railroad | | CG | 1889 | 1906 | Wadley Southern Railway | |
| Wadley and Mount Vernon Extension Railroad | | G&F | 1902 | 1905 | Douglas, Augusta and Gulf Railway | |
| Wadley Southern Railroad | | | 1962 | 1964 | N/A | |
| Wadley Southern Railway | WDS | CG | 1906 | 1962 | Wadley Southern Railroad | |
| Walton Railroad | | ACL/ L&N | 1872 | 1884 | Gainesville, Jefferson and Southern Railroad | |
| Washington and Lincolnton Railroad | | | 1914 | 1932 | N/A | |
| Washington Rail or Plank Road Company | | ACL/ L&N | 1850 | 1852 | Georgia Railroad and Banking Company | |
| Waycross Air Line Railroad | | ACL | 1887 | 1901 | Atlantic and Birmingham Railroad | Still exists as a portion of CSX Transportation's Fitzgerald Subdivision. |
| Waycross and Florida Railroad | | ACL | 1879 | 1884 | Savannah, Florida and Western Railway | |
| Waycross and Southern Railroad | | | 1910 | 1928 | N/A | |
| Waycross and Western Railroad | | | | | | |
| Western Railroad of Alabama | | ACL/ L&N | 1870 | 1883 | Western Railway of Alabama | |
| Western Railway of Alabama | WA | ACL/ L&N | 1883 | 2002 | CSX Transportation | |
| Western and Atlantic Railroad | | L&N | 1836 | | | Still exists as a lessor of CSX Transportation. |
| Willacoochee and Dupont Railroad | | | | | | |
| Wills Valley Railroad | | SOU | 1854 | 1868 | Alabama and Chattanooga Railroad | |
| Wrightsville and Sun Hill Railroad | | CG | 1883 | 1883 | Wrightsville and Tennille Railroad | |
| Wrightsville and Tennille Railroad | W&TR, WTR | CG | 1883 | 1971 | Central of Georgia Railroad | | |
