| State: | Missouri |
| District Number: | 12 |
| Obsolete: | yes |
| Created: | 1870 1935 |
| Eliminated: | 1930 1950 |
| Years: | 1873–1933 1935–1953 |
| Population Year: | 1920 1940 |
The 12th congressional district of Missouri was a congressional district for the United States House of Representatives in Missouri from 1873 to 1953.
| Member | Party | Years | Cong ress | Electoral history | |||
|---|---|---|---|---|---|---|---|
| District created March 4, 1873 | |||||||
| align=left | John M. Glover | Democratic | nowrap | March 4, 1873 – March 3, 1879 | Elected in 1872. Re-elected in 1874. Re-elected in 1876. Lost renomination. | ||
| align=left | William H. Hatch | Democratic | nowrap | March 4, 1879 – March 3, 1883 | Elected in 1878. Re-elected in 1880. Redistricted to the . | ||
| align=left | Charles H. Morgan | Democratic | nowrap | March 4, 1883 – March 3, 1885 | Elected in 1882. Lost re-election. | ||
| align=left | William J. Stone | Democratic | nowrap | March 4, 1885 – March 3, 1891 | Elected in 1884. Re-elected in 1886. Re-elected in 1888. Retired. | ||
| align=left | David A. De Armond | Democratic | nowrap | March 4, 1891 – March 3, 1893 | Elected in 1890. Redistricted to the . | ||
| align=left | Seth W. Cobb | Democratic | nowrap | March 4, 1893 – March 3, 1897 | Redistricted from the and re-elected in 1892. Re-elected in 1894. Retired. | ||
| align=left | Charles E. Pearce | Republican | nowrap | March 4, 1897 – March 3, 1901 | Elected in 1896. Re-elected in 1898. Retired. | ||
| align=left | James Joseph Butler | Democratic | nowrap | March 4, 1901 – June 28, 1902 | Elected in 1900. Seat declared Vacant. | ||
| Vacant | nowrap | June 28, 1902 – November 4, 1902 | |||||
| align=left | James Joseph Butler | Democratic | nowrap | November 4, 1902 – February 26, 1903 | Elected to fill the vacant seat. Lost election contest. | ||
| align=left | George C. R. Wagoner | Republican | nowrap | February 26, 1903 – March 3, 1903 | Won election contest. Retired. | ||
| align=left | James Joseph Butler | Democratic | nowrap | March 4, 1903 – March 3, 1905 | Elected in 1902. Retired. | ||
| align=left | Ernest E. Wood | Democratic | nowrap | March 4, 1905 – June 23, 1906 | Elected in 1904. Lost election contest. | ||
| align=left | Harry M. Coudrey | Republican | nowrap | June 23, 1906 – March 3, 1911 | Won election contest. Re-elected in 1906. Re-elected in 1908. Retired. | ||
| align=left | Leonidas C. Dyer | Republican | nowrap | March 4, 1911 – June 19, 1914 | Elected in 1910. Re-elected in 1912. Lost election contest. | ||
| align=left | Michael J. Gill | Democratic | nowrap | June 19, 1914 – March 3, 1915 | Won election contest. Lost re-election. | ||
| align=left | Leonidas C. Dyer | Republican | nowrap | March 4, 1915 – March 3, 1933 | Elected in 1914. Re-elected in 1916. Re-elected in 1918. Re-elected in 1920. Re-elected in 1922. Re-elected in 1924. Re-elected in 1926. Re-elected in 1928. Re-elected in 1930. Redistricted to the and lost re-election. | ||
| District inactive | nowrap | March 4, 1933 – January 3, 1935 | All representatives elected at-large. | ||||
| align=left | James R. Claiborne | Democratic | nowrap | January 3, 1935 – January 3, 1937 | Redistricted from the and re-elected in 1934. Lost renomination. | ||
| align=left | Charles A. Anderson | Democratic | nowrap | January 3, 1937 – January 3, 1941 | Elected in 1936. Re-elected in 1938. Lost re-election. | ||
| align=left | Walter C. Ploeser | Republican | nowrap | January 3, 1941 – January 3, 1949 | Elected in 1940. Re-elected in 1942. Re-elected in 1944. Re-elected in 1946. Lost re-election. | ||
| align=left | Raymond W. Karst | Democratic | nowrap | January 3, 1949 – January 3, 1951 | Elected in 1948. Lost re-election. | ||
| align=left | Thomas B. Curtis | Republican | nowrap | January 3, 1951 – January 3, 1953 | Elected in 1950. Redistricted to the . | ||
| District eliminated January 3, 1953 | |||||||