This list contains the 50 governors of states in the United States who have served for the longest years, consecutively or otherwise. Pre-statehood territorial and colonial governors are not included.[1]
| 1 | [2] | Iowa | days (22 years) | January 14, 1983 | January 15, 1999 | Republican |
| January 14, 2011 | May 24, 2017 | |||||
| 2 | New York | days (19 years) | July 30, 1777 | June 30, 1795 | Democratic-Republican | |
| July 1, 1801 | June 30, 1804 | |||||
| 3 | Alabama | days (15 years) | January 14, 1963 | January 16, 1967 | Democratic | |
| January 18, 1971 | January 15, 1979 | |||||
| January 17, 1983 | January 19, 1987 | |||||
| 4 | California | days (15 years) | January 6, 1975 | January 3, 1983 | Democratic | |
| January 3, 2011 | January 7, 2019 | |||||
| South Dakota | days | January 1, 1979 | January 6, 1987 | Republican | ||
| January 7, 1995 | January 3, 2003 | |||||
| 6 | Ohio | days | January 14, 1963 | January 11, 1971 | Republican | |
| January 13, 1975 | January 10, 1983 | |||||
| North Carolina | days | January 8, 1977 | January 5, 1985 | Democratic | ||
| January 9, 1993 | January 6, 2001 | |||||
| 8 | Louisiana | days | May 9, 1972 | March 10, 1980 | Democratic | |
| March 12, 1984 | March 14, 1988 | |||||
| January 13, 1992 | January 8, 1996 | |||||
| 9 | Rhode Island | days (15 years) | May 5, 1790 | October 15, 1805 | Country | |
| 10 | Maryland | days (14 years) | January 14, 1920 | January 9, 1935 | Democratic | |
| 11 | New York | days (14 years) | January 1, 1959 | December 18, 1973 | Republican | |
| 12 | Texas | days (14 years) | December 21, 2000 | January 20, 2015 | Republican | |
| 13 | Wisconsin | days (14 years) | January 5, 1987 | February 1, 2001 | Republican | |
| 14 | Idaho | days | January 4, 1971 | January 23, 1977 | Democratic | |
| January 5, 1987 | January 2, 1995 | |||||
| 15 | New Hampshire | days | June 5, 1794 | June 6, 1805 | Federalist | |
| June 3, 1813 | June 6, 1816 | |||||
| 16 | Illinois | days (14 years) | January 10, 1977 | January 14, 1991 | Republican | |
| 17 | Iowa | days (13 years) | January 16, 1969 | January 14, 1983 | Republican | |
| 18 | Michigan | days (13 years) | January 22, 1969 | January 1, 1983 | Republican | |
| 19 | Arizona | days | February 14, 1912 | January 1, 1917 | Democratic | |
| December 25, 1917 | January 6, 1919 | |||||
| January 1, 1923 | January 7, 1929 | |||||
| January 5, 1931 | January 2, 1933 | |||||
| 20 | New Jersey | days | August 31, 1776 | July 25, 1790 | Federalist | |
| 21 | Rhode Island | days | May 6, 1807 | May 1, 1811 | Democratic-Republican, Law and Order | |
| May 5, 1824 | May 4, 1831 | |||||
| May 2, 1843 | May 6, 1845 | |||||
| 22 | New Jersey | days (12 years) | February 6, 1817 | October 30, 1829 | Democratic-Republican | |
| 23 | Oregon | days | January 9, 1995 | January 13, 2003 | Democratic | |
| January 10, 2011 | February 18, 2015 | |||||
| 24 | Tennessee | days | October 1, 1821 | October 1, 1827 | Democratic-Republican, Democratic | |
| October 1, 1829 | October 12, 1835 | |||||
| 25 | West Virginia | days | January 13, 1969 | January 17, 1977 | Republican | |
| January 14, 1985 | January 16, 1989 | |||||
| 26 | Idaho | days (12 years) | January 1, 2007 | January 7, 2019 | Republican | |
| 27 | New Mexico | days | January 1, 1971 | January 1, 1975 | Democratic | |
| January 1, 1979 | January 1, 1983 | |||||
| January 1, 1991 | January 1, 1995 | |||||
| 28 | Washington | days | January 15, 1941 | January 10, 1945 | Republican | |
| January 12, 1949 | January 16, 1957 | |||||
| Michigan | days (12 years) | January 1, 1949 | January 1, 1961 | Democratic | ||
| Massachusetts | days | January 2, 1975 | January 4, 1979 | Democratic | ||
| January 6, 1983 | January 3, 1991 | |||||
| Michigan | days (12 years) | January 1, 1991 | January 1, 2003 | Republican | ||
| 32 | New York | days (11 years) | January 1, 1943 | December 31, 1954 | Republican | |
| Idaho | days (11 years) | January 3, 1955 | January 2, 1967 | Republican | ||
| Arkansas | days (11 years) | January 11, 1955 | January 10, 1967 | Democratic | ||
| Hawaii | days (11 years) | December 3, 1962 | December 2, 1974 | Democratic | ||
| Utah | days (11 years) | January 4, 1965 | January 3, 1977 | Democratic | ||
| Washington | days (11 years) | January 13, 1965 | January 12, 1977 | Republican | ||
| Hawaii | days (11 years) | December 2, 1974 | December 1, 1986 | Democratic | ||
| Wyoming | days (11 years) | January 6, 1975 | January 5, 1987 | Democratic | ||
| Colorado | days (11 years) | January 14, 1975 | January 13, 1987 | Democratic | ||
| New York | days (11 years) | January 1, 1983 | December 31, 1994 | Democratic | ||
| Colorado | days (11 years) | January 13, 1987 | January 12, 1999 | Democratic | ||
| New York | days (11 years) | January 1, 1995 | December 31, 2006 | Republican | ||
| 44 | North Dakota | days (11 years) | January 4, 1961 | January 2, 1973 | Democratic–Nonpartisan League | |
| 45 | Arkansas | days | January 9, 1979 | January 19, 1981 | Democratic | |
| January 11, 1983 | December 12, 1992 | |||||
| 46 | Alaska | days | January 3, 1959 | December 5, 1966 | Democratic | |
| December 7, 1970 | December 2, 1974 | |||||
| 47 | Mississippi | days | March 29, 1876 | January 2, 1882 | Democratic | |
| January 13, 1890 | January 20, 1896 | |||||
| 48 | Connecticut | days | December 1, 1797 | August 7, 1809 | Federalist | |
| 49 | Washington | days | January 16, 2013 | incumbent | Democratic | |
| 50 | Tennessee | days | March 30, 1796 | September 23, 1801 | Democratic-Republican | |
| September 23, 1803 | September 20, 1809 |