List of United States senators from Missouri

Missouri was admitted to the Union on August 10, 1821. Its current U.S. senators are Republicans Josh Hawley (class 1, serving since 2019) and Eric Schmitt (class 3, serving since 2023). Francis Cockrell was Missouri's longest-serving senator (1875–1905). Missouri is one of fifteen states alongside Arizona, Colorado, Florida, Georgia, Hawaii, Idaho, Indiana, Louisiana, Maine, Massachusetts, Minnesota, Nevada, South Dakota and Utah to have a younger senior senator and an older junior senator.

Current delegation

Josh Hawley (R)

Eric Schmitt (R)

List of senators

#	Senator	Party	Dates in office	Electoral history	T	C	T	Electoral history	Dates in office	Party	Senator	#
Class 1 Class 1 senators belong to the electoral cycle that has recently been contested in 2000, 2002 (special), 2006, 2012, and 2018. The next election will be in 2024.						C	Class 3 Class 3 senators belong to the electoral cycle that has recently been contested in 2004, 2010, 2016, and 2022. The next election will be in 2028.
1	Thomas Hart Benton	Democratic- Republican	Aug 10, 1821 – Mar 3, 1851	Elected in 1821.	1	17th	1	Elected in 1821.	Aug 10, 1821 – Mar 3, 1831	Democratic- Republican	David Barton	1
		Democratic- Republican				18th	1	Elected in 1821.		Democratic- Republican
		Jacksonian				19th	2	Re-elected in 1825. Lost re-election.		National Republican
				Re-elected in 1827.	2	20th
						21st
						22nd	3	Elected in 1830. Died.	Mar 4, 1831 – Jun 6, 1833	Jacksonian	Alexander Buckner	2
				Re-elected in 1833.	3	23rd		Elected in 1830. Died.	Mar 4, 1831 – Jun 6, 1833	Jacksonian	Alexander Buckner	2
									Jun 6, 1833 – Oct 25, 1833	Vacant
								Appointed to continue Buckner's term. Elected to finish Buckner's term.	Oct 25, 1833 – Oct 3, 1843	Jacksonian	Lewis F. Linn	3
						24th				Jacksonian
		Democratic				25th	4	Re-elected in 1836.		Democratic
				Re-elected in 1839.	4	26th
						27th
						28th	5	Re-elected in 1842. Died.
									Oct 3, 1843 – Oct 14, 1843	Vacant
								Appointed to continue Linn's term. Elected to finish Linn's term.	Oct 14, 1843 – Mar 3, 1855	Democratic	David Rice Atchison	4
				Re-elected in 1845. Lost re-election.	5	29th
						30th
						31st	6	Re-elected in 1849. Lost re-election.
2	Henry S. Geyer	Whig	Mar 4, 1851 – Mar 3, 1857	Elected in 1851. Retired.	6	32nd
						33rd
						34th	7	Failure to elect.	Mar 4, 1855 – Jan 12, 1857	Vacant
						34th		Elected late in 1857. Retired or lost re-election.	Jan 12, 1857 – Mar 3, 1861	Democratic	James S. Green	5
3	Trusten Polk	Democratic	Mar 4, 1857 – Jan 10, 1862	Elected in 1857. Expelled for supporting the Confederacy in the American Civil War.	7	35th
						36th
						37th	8		Mar 4, 1861 – Mar 17, 1861	Vacant
								Elected late in 1861. Expelled for supporting the Confederacy in the American Civil War.	Mar 17, 1861 – Jan 10, 1862	Democratic	Waldo Johnson	6
Vacant			Jan 10, 1862 – Jan 17, 1862						Jan 10, 1862 – Jan 17, 1862	Vacant
4	John B. Henderson	Union	Jan 17, 1862 – Mar 3, 1869	Appointed to finish Polk's term.				Appointed to continue Johnson's term. Successor qualified.	Jan 17, 1862 – Nov 13, 1863	Union	Robert Wilson	7
				Elected to the next term in 1863. Retired.	8	38th		Appointed to continue Johnson's term. Successor qualified.	Jan 17, 1862 – Nov 13, 1863	Union	Robert Wilson	7
						38th		Elected to finish Johnson's term. Retired due to ill health.	Nov 13, 1863 – Mar 3, 1867	Union Emancipation	B. Gratz Brown	8
		Republican				39th			Nov 13, 1863 – Mar 3, 1867	Republican	B. Gratz Brown	8
		Republican				40th	9	Elected in 1866 or 1867. Resigned to become Chief Justice of the U.S. Court of Claims.	Mar 4, 1867 – Dec 19, 1870	Republican	Charles D. Drake	9
5	Carl Schurz	Republican	Mar 4, 1869 – Mar 3, 1875	Elected in 1868. Retired.	9	41st			Mar 4, 1867 – Dec 19, 1870	Republican	Charles D. Drake	9
		Liberal Republican				41st		Appointed to continue Drake's term. Retired when successor elected.	Dec 19, 1870 – Jan 20, 1871	Republican	Daniel T. Jewett	10
		Liberal Republican				42nd		Elected to finish Drake's term. Lost re-election.	Jan 20, 1871 – Mar 3, 1873	Democratic	Francis P. Blair	11
		Republican				42nd		Elected to finish Drake's term. Lost re-election.	Jan 20, 1871 – Mar 3, 1873	Democratic	Francis P. Blair	11
		Republican				43rd	10	Elected in 1872 or 1873. Died.	Mar 4, 1873 – Sep 20, 1877	Democratic	Lewis V. Bogy	12
6	Francis Cockrell	Democratic	Mar 4, 1875 – Mar 3, 1905	Elected in 1874.	10	44th
						45th
									Sep 20, 1877 – Sep 29, 1877	Vacant
								Appointed to continue Bogy's term. Retired.	Sep 29, 1877 – Jan 26, 1879	Democratic	David H. Armstrong	13
								Elected to finish Bogy's term. Retired.	Jan 27, 1879 – Mar 3, 1879	Democratic	James Shields	14
						46th	11	Elected in 1879.	Mar 4, 1879 – Mar 3, 1903	Democratic	George G. Vest	15
				Re-elected in 1881.	11	47th
						48th
						49th	12	Re-elected in 1885.
				Re-elected in 1887.^[1]	12	50th
						51st
						52nd	13	Re-elected in 1891.
				Re-elected in 1893.^[2]	13	53rd
						54th
						55th	14	Re-elected in 1897. Retired.
				Re-elected in 1899.^[3] Lost re-election.^[4]	14	56th
						57th
						58th	15	Elected in 1903.	Mar 4, 1903 – Apr 14, 1918	Democratic	William J. Stone	16
Vacant			Mar 4, 1905 – Mar 18, 1905		15	59th
7	William Warner	Republican	Mar 18, 1905 – Mar 3, 1911	Elected late in 1905. Retired.		59th
						60th
						61st	16	Re-elected in 1909.^[5]
8	James A. Reed	Democratic	Mar 4, 1911 – Mar 3, 1929	Elected in 1910.	16	62nd
						63rd
						64th	17	Re-elected in 1914. Died.
				Re-elected in 1916.	17	65th		Re-elected in 1914. Died.
									Apr 14, 1918 – Apr 30, 1918	Vacant
								Appointed to continue Stone's term. Lost renomination to finish Stone's term.	Apr 30, 1918 – Nov 5, 1918	Democratic	Xenophon P. Wilfley	17
								Elected in 1918 to finish Stone's term.	Nov 6, 1918 – May 16, 1925	Republican	Selden P. Spencer	18
						66th		Elected in 1918 to finish Stone's term.
						67th	18	Re-elected in 1920. Died.
				Re-elected in 1922. Retired.	18	68th
						69th
									May 16, 1925 – May 25, 1925	Vacant
								Appointed to continue Spencer's term. Lost elections to finish Spencer's term and to the next term.	May 25, 1925 – Dec 5, 1926	Republican	George H. Williams	19
								Elected to finish Spencer's term.	Dec 6, 1926 – Feb 3, 1933	Democratic	Harry B. Hawes	20
						70th	19	Also elected to the next term in 1926. Retired, then resigned early.
9	Roscoe C. Patterson	Republican	Mar 4, 1929 – Jan 3, 1935	Elected in 1928. Lost re-election.	19	71st
						72nd
						72nd		Appointed to finish Hawes's term, having already been elected to the next term.	Feb 3, 1933 – Jan 3, 1945	Democratic	Joel B. Clark	21
						73rd	20	Elected in 1932.
10	Harry S. Truman	Democratic	Jan 3, 1935 – Jan 17, 1945	Elected in 1934.	20	74th
						75th
						76th	21	Re-elected in 1938. Lost renomination.
				Re-elected in 1940. Resigned to become U.S. Vice President.	21	77th
						78th
						79th	22	Elected in 1944. Lost re-election.	Jan 3, 1945 – Jan 3, 1951	Republican	Forrest C. Donnell	22
11	Frank P. Briggs	Democratic	Jan 18, 1945 – Jan 3, 1947	Appointed to finish Truman's term. Lost election to full term.		79th
12	James P. Kem	Republican	Jan 3, 1947 – Jan 3, 1953	Elected in 1946. Lost re-election.	22	80th
						81st
						82nd	23	Elected in 1950.	Jan 3, 1951 – Sep 13, 1960	Democratic	Thomas Hennings	23
13	Stuart Symington	Democratic	Jan 3, 1953 – Dec 27, 1976	Elected in 1952.	23	83rd
						84th
						85th	24	Re-elected in 1956. Died.
				Elected in 1958.	24	86th		Re-elected in 1956. Died.
									Sep 13, 1960 – Sep 23, 1960	Vacant
								Appointed to continue Henning's term. Elected to finish Henning's term.	Sep 23, 1960 – Dec 27, 1968	Democratic	Edward V. Long	24
						87th
						88th	25	Re-elected in 1962. Lost renomination, and resigned early.
				Elected in 1964.	25	89th
						90th
						90th		Appointed to finish Long's term, having been elected to next term.	Dec 28, 1968 – Jan 3, 1987	Democratic	Thomas Eagleton	25
						91st	26	Elected in 1968.
				Elected in 1970. Retired, then resigned early to give successor preferential seniority.	26	92nd
						93rd
						94th	27	Re-elected in 1974.
14	John Danforth	Republican	Dec 27, 1976 – Jan 3, 1995	Appointed to finish Symington's term, having already been elected to the next term.		94th
				Elected in 1976.	27	95th
						96th
						97th	28	Re-elected in 1980. Retired.
				Re-elected in 1982.	28	98th
						99th
						100th	29	Elected in 1986.	Jan 3, 1987 – Jan 3, 2011	Republican	Kit Bond	26
				Re-elected in 1988. Retired.	29	101st
						102nd
						103rd	30	Re-elected in 1992.
15	John Ashcroft	Republican	Jan 3, 1995 – Jan 3, 2001	Elected in 1994. Lost re-election.	30	104th
						105th
						106th	31	Re-elected in 1998.
16	Jean Carnahan	Democratic	Jan 3, 2001 – Nov 23, 2002	Appointed to begin the term of her husband, Mel Carnahan (D), who was posthumously elected in 2000. Lost election to finish her husband's term.	31	107th
17	Jim Talent	Republican	Nov 23, 2002 – Jan 3, 2007	Elected in 2002 to finish Mel Carnahan's term. Lost re-election.		107th
						108th
						109th	32	Re-elected in 2004. Retired.
18	Claire McCaskill	Democratic	Jan 3, 2007 – Jan 3, 2019	Elected in 2006.	32	110th
						111th
						112th	33	Elected in 2010.	Jan 3, 2011 – Jan 3, 2023	Republican	Roy Blunt	27
				Re-elected in 2012. Lost re-election.	33	113th
						114th
						115th	34	Re-elected in 2016. Retired.
19	Josh Hawley	Republican	Jan 3, 2019 – present	Elected in 2018.	34	116th
						117th
						118th	35	Elected in 2022.	Jan 3, 2023 – present	Republican	Eric Schmitt	28
				Re-elected in 2024.	35	119th
						120th
						121st	36	To be determined in the 2028 election.
#	Senator	Party	Years in office	Electoral history	T	C	T	Electoral history	Years in office	Party	Senator	#
Class 1						C	Class 3