List of United States senators from Wyoming

Current delegation

John Barrasso (R)

Cynthia Lummis (R)

Wyoming was admitted to the Union on July 10, 1890, and elects United States senators to Class 1 and Class 2. Its current U.S. senators are Republicans John Barrasso (serving since 2007) and Cynthia Lummis (serving since 2021). 21 people have served as a United States senator from Wyoming.

List of senators[]

#	Senator	Party	Dates in office	Electoral history	T	C	T	Electoral history	Dates in office	Party	Senator	#
Class 1 Class 1 U.S. senators belong to the electoral cycle that has recently been contested in 2000, 2006, 2012, and 2018. The next election will be in 2024.						C	Class 2 Class 2 U.S. senators belong to the electoral cycle that has recently been contested in 2002, 2008, 2014, and 2020. The next election will be in 2026.
Vacant			July 10, 1890 – November 18, 1890	After joining the Union, Wyoming did not elect its senators for four months.	1	51st	1	After joining the Union, Wyoming did not elect its senators for four months.	July 10, 1890 – November 15, 1890	Vacant
1	Francis E. Warren	Republican	November 18, 1890 – March 3, 1893	Elected in 1890. Lost re-election.		51st		Elected in 1890. Lost re-election.	November 15, 1890 – March 3, 1895	Republican	Joseph M. Carey	1
1	Francis E. Warren	Republican	November 18, 1890 – March 3, 1893	Elected in 1890. Lost re-election.		52nd
Vacant			March 4, 1893 – January 23, 1895		2	53rd
2	Clarence D. Clark	Republican	January 23, 1895 – March 3, 1917	Elected to finish vacant term.		53rd
						54th	2	Elected in 1895.	March 4, 1895 – November 24, 1929	Republican	Francis E. Warren	2
						55th
				Re-elected in 1899.	3	56th
						57th	3	Re-elected January 22, 1901.
						58th
				Re-elected January 25, 1905.	4	59th
						60th	4	Re-elected January 22, 1907.
						61st
				Re-elected January 24, 1911. Lost re-election.	5	62nd
						63rd	5	Re-elected January 28, 1913.
						64th
3	John B. Kendrick	Democratic	March 4, 1917 – November 3, 1933	Elected in 1916.	6	65th
						66th	6	Re-elected in 1918.
						67th
				Re-elected in 1922.	7	68th
						69th	7	Re-elected in 1924. Died.
						70th
				Re-elected in 1928. Died.	8	71st
									November 24, 1929 – December 5, 1929	Vacant
								Appointed to continue Warren's term. Retired when successor elected.	December 5, 1929 – November 20, 1930	Republican	Patrick J. Sullivan	3
									November 20, 1930 – December 1, 1930	Vacant
								Elected to finish Warren's term.	December 1, 1930 – January 3, 1937	Republican	Robert D. Carey	4
						72nd	8	Elected to full term in 1930. Lost re-election.
						73rd
Vacant			November 3, 1933 – December 18, 1933
4	Joseph C. O'Mahoney	Democratic	December 18, 1933 – January 3, 1953	Appointed to continue Kendrick's term. Elected November 6, 1934 to finish Kendrick's term.
				Elected in 1934.	9	74th
						75th	9	Elected in 1936. Lost re-election.	January 3, 1937 – January 3, 1943	Democratic	Henry H. Schwartz	5
						76th
				Re-elected in 1940.	10	77th
						78th	10	Elected in 1942. Lost re-election.	January 3, 1943 – January 3, 1949	Republican	Edward V. Robertson	6
						79th
				Re-elected in 1946. Lost re-election.	11	80th
						81st	11	Elected in 1948. Died.	January 3, 1949 – June 19, 1954	Democratic	Lester C. Hunt	7
						82nd
5	Frank A. Barrett	Republican	January 3, 1953 – January 3, 1959	Elected in 1952. Lost re-election.	12	83rd
									June 19, 1954 – June 24, 1954	Vacant
								Appointed to continue Hunt's term. Retired when successor elected.	June 24, 1954 – November 28, 1954	Republican	Edward D. Crippa	8
								Elected November 8, 1954 to finish Hunt's term.	November 29, 1954 – January 3, 1961	Democratic	Joseph C. O'Mahoney	9
						84th	12	Elected to full term in 1954. Retired.
						85th
6	Gale W. McGee	Democratic	January 3, 1959 – January 3, 1977	Elected in 1958.	13	86th
						87th	13	Edwin Keith Thomson (R) was elected in 1960, but died December 9, 1960, before the Congress began. Acting as Governor of Wyoming, Hickey appointed himself to begin Thomson's term. Lost election to finish Thomson's term.	January 3, 1961 – November 6, 1962	Democratic	John J. Hickey	10
						87th		Elected to finish Thomson's term. Retired.	November 7, 1962 – January 3, 1967	Republican	Milward L. Simpson	11
						88th
				Re-elected in 1964.	14	89th
						90th	14	Elected in 1966.	January 3, 1967 – December 31, 1978	Republican	Clifford P. Hansen	12
						91st
				Re-elected in 1970. Lost re-election.	15	92nd
						93rd	15	Re-elected in 1972. Retired and resigned early to give successor preferential seniority.
						94th
7	Malcolm Wallop	Republican	January 3, 1977 – January 3, 1995	Elected in 1976.	16	95th
						95th		Appointed to finish Hansen's term, having already been elected to the next term.	January 1, 1979 – January 3, 1997	Republican	Alan K. Simpson	13
						96th	16	Elected in 1978.
						97th
				Re-elected in 1982.	17	98th
						99th	17	Re-elected in 1984.
						100th
				Re-elected in 1988. Retired.	18	101st
						102nd	18	Re-elected in 1990. Retired.
						103rd
8	Craig Thomas	Republican	January 3, 1995 – June 4, 2007	Elected in 1994.	19	104th
						105th	19	Elected in 1996.	January 3, 1997 – January 3, 2021	Republican	Mike Enzi	14
						106th
				Re-elected in 2000.	20	107th
						108th	20	Re-elected in 2002.
						109th
				Re-elected in 2006. Died.	21	110th
Vacant			June 4, 2007 – June 22, 2007	Re-elected in 2006. Died.
9	John Barrasso	Republican	June 22, 2007 – Present	Appointed to continue Thomas's term. Elected November 4, 2008 to finish Thomas's term.
						111th	21	Re-elected in 2008.
						112th
				Re-elected in 2012.	22	113th
						114th	22	Re-elected in 2014. Retired.
						115th
				Re-elected in 2018.	23	116th
						117th	23	Elected in 2020.	January 3, 2021 – Present	Republican	Cynthia Lummis	15
						118th
To be determined in the 2024 election.					24	119th
To be determined in the 2024 election.					24	120th	24	To be determined in the 2026 election.
#	Senator	Party	Years in office	Electoral history	T		T	Electoral history	Years in office	Party	Senator	#
Class 1							Class 2

Living former senators[]

As of August 2021, there is one living former U.S. senator from Wyoming. The most recent and most recently serving senator to die was Mike Enzi (served 1997–2021) on July 26, 2021.

Senator	Term of office	Date of birth (and age)
Alan K. Simpson	1979–1997	(1931-09-02) September 2, 1931 (age 89)

Superlatives[]

Longest service[]

Senator	First served	Last served	Length of service
Francis E. Warren	November 24, 1890	March 3, 1893	Combined total: 37 years, 6 days (13,519 days)
Francis E. Warren	March 4, 1895	November 24, 1929	Combined total: 37 years, 6 days (13,519 days)
Joseph C. O'Mahoney	December 18, 1933	January 3, 1953	Combined total: 25 years, 51 days (9,176 days)
Joseph C. O'Mahoney	November 29, 1954	January 3, 1961	Combined total: 25 years, 51 days (9,176 days)
Mike Enzi	January 3, 1997	January 3, 2021	24 years, 0 days (8,766 days)
Clarence D. Clark	January 23, 1895	March 3, 1917	22 years, 39 days (8,074 days)
Alan Simpson	January 1, 1979	January 3, 1997	18 years, 2 days (6,577 days)

Shortest service[]

Excludes incumbent Lummis

Senator	First served	Last served	Length of service
Edward D. Crippa	June 24, 1954	November 28, 1954	5 months and 4 days (157 days)
Patrick Joseph Sullivan	December 5, 1929	November 30, 1930	11 months, 3 weeks and 4 days (360 days)
John J. Hickey	January 3, 1961	November 6, 1962	1 year, 10 months and 3 days (672 days)
Milward Simpson	November 6, 1962	January 3, 1967	4 years, 1 month and 4 weeks (1,519 days)
Joseph M. Carey	November 15, 1890	March 3, 1895	4 years, 3 months, 2 weeks and 2 days (1,569 days)

Youngest at beginning of service[]

Senator	Date of birth	First served	Age
Clarence D. Clark	April 16, 1851	January 23, 1895	43 years, 9 months and 7 days
Gale W. McGee	March 17, 1915	January 3, 1959	43 years, 9 months and 17 days
Malcolm Wallop	February 27, 1933	January 3, 1977	43 years, 10 months and 7 days
Joseph M. Carey	January 19, 1845	November 15, 1890	45 years, 9 months and 27 days
Francis E. Warren	June 20, 1844	November 24, 1890	46 years, 5 months and 4 days

Oldest at end of service[]

Senator	Date of birth	Last served	Age
Francis E. Warren	June 20, 1844	November 24, 1929	85 years, 5 months and 4 days
Mike Enzi	February 1, 1944	January 3, 2021	76 years, 11 months and 2 days
Joseph C. O'Mahoney	November 5, 1884	January 3, 1961	76 years, 1 month and 29 days
John B. Kendrick	September 6, 1857	November 3, 1933	76 years, 1 month and 28 days
Craig L. Thomas	February 17, 1933	June 4, 2007	74 years, 3 months and 18 days

References[]

External links[]

Wyoming Senators, Representatives on GovTrack.us
Senators of the 115th Congress, U.S. Senate

show v t United States senators from Wyoming
Class 1	Warren Clark Kendrick O'Mahoney Barrett McGee Wallop Thomas Barrasso
Class 2	J. Carey Warren Sullivan R. Carey Schwartz Robertson Hunt Crippa O'Mahoney Hickey M. Simpson Hansen A. Simpson Enzi Lummis

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