List of United States senators from Wyoming

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. Francis E. Warren was Wyoming's longest serving senator (served 1890–1893; 1895–1929).

List of senators

|- style="height:2em" | colspan=3 | Vacant | nowrap | Jul 10, 1890 –
Nov 18, 1890 | After joining the Union, Wyoming did not elect its senators for four months. | rowspan=3 | 1 | rowspan=2 Template:List of United States senators Congress | rowspan=5 | 1 | After joining the Union, Wyoming did not elect its senators for four months. | nowrap | Jul 10, 1890 –
Nov 15, 1890 | colspan=3 | Vacant

|- style="height:2em" ! rowspan=2 | 1 | rowspan=2 align=left |
Francis E. Warren | rowspan=2 Template:Party shading/Republican | Republican | rowspan=2 nowrap | Nov 18, 1890 –
Mar 3, 1893 | rowspan=2 | Elected in 1890.Template:PbLost re-election. | rowspan=4 | Elected in 1890.Template:PbLost re-election. | rowspan=4 nowrap | Nov 15, 1890 –
Mar 3, 1895 | rowspan=4 Template:Party shading/Republican | Republican | rowspan=4 align=right |
Joseph M. Carey ! rowspan=4 | 1

|- style="height:2em" | Template:List of United States senators Congress

|- style="height:2em" | colspan=3 | Vacant | nowrap | Mar 4, 1893 –
Jan 23, 1895 |   | rowspan=4 | 2 | rowspan=2 Template:List of United States senators Congress

|- style="height:2em" ! rowspan=12 | 2 | rowspan=12 align=left |
Clarence D. Clark | rowspan=12 Template:Party shading/Republican | Republican | rowspan=12 nowrap | Jan 23, 1895 –
Mar 3, 1917 | rowspan=3 | Elected to finish vacant term.

|- style="height:2em" | Template:List of United States senators Congress | rowspan=3 | 2 | rowspan=3 | Elected in 1895. | rowspan=18 nowrap | Mar 4, 1895 –
Nov 24, 1929 | rowspan=18 Template:Party shading/Republican | Republican | rowspan=18 align=right |
Francis E. Warren ! rowspan=18 | 2

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|- style="height:2em" | rowspan=3 | Re-elected in 1899. | rowspan=3 | 3 | Template:List of United States senators Congress

|- style="height:2em" | Template:List of United States senators Congress | rowspan=3 | 3 | rowspan=3 | Re-elected in 1901.

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|- style="height:2em" | rowspan=3 | Re-elected in 1905. | rowspan=3 | 4 | Template:List of United States senators Congress

|- style="height:2em" | Template:List of United States senators Congress | rowspan=3 | 4 | rowspan=3 | Re-elected in 1907.

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|- style="height:2em" | rowspan=3 | Re-elected in 1911.Template:PbLost re-election. | rowspan=3 | 5 | Template:List of United States senators Congress

|- style="height:2em" | Template:List of United States senators Congress | rowspan=3 | 5 | rowspan=3 | Re-elected in 1913.

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|- style="height:2em" ! rowspan=13 | 3 | rowspan=13 align=left |
John B. Kendrick | rowspan=13 Template:Party shading/Democratic | Democratic | rowspan=13 nowrap | Mar 4, 1917 –
Nov 3, 1933 | rowspan=3 | Elected in 1916. | rowspan=3 | 6 | Template:List of United States senators Congress

|- style="height:2em" | Template:List of United States senators Congress | rowspan=3 | 6 | rowspan=3 | Re-elected in 1918.

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|- style="height:2em" | rowspan=3 | Re-elected in 1922. | rowspan=3 | 7 | Template:List of United States senators Congress

|- style="height:2em" | Template:List of United States senators Congress | rowspan=7 | 7 | rowspan=3 | Re-elected in 1924.Template:PbDied.

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|- style="height:2em" | rowspan=7 | Re-elected in 1928.Template:PbDied. | rowspan=9 | 8 | rowspan=5 Template:List of United States senators Congress

|- style="height:2em" |   | nowrap | Nov 24, 1929 –
Dec 5, 1929 | colspan=3 | Vacant

|- style="height:2em" | Appointed to continue Warren's term.Template:PbRetired when successor elected. | nowrap | Dec 5, 1929 –
Nov 20, 1930 | Template:Party shading/Republican | Republican | align=right |
Patrick J. Sullivan ! 3

|- style="height:2em" |   | nowrap | Nov 20, 1930 –
Dec 1, 1930 | colspan=3 | Vacant

|- style="height:2em" | Elected to finish Warren's term. | rowspan=6 nowrap | Dec 1, 1930 –
Jan 3, 1937 | rowspan=6 Template:Party shading/Republican | Republican | rowspan=6 align=right |
Robert D. Carey ! rowspan=6 | 4

|- style="height:2em" | Template:List of United States senators Congress | rowspan=5 | 8 | rowspan=5 | Elected to full term in 1930.Template:PbLost re-election.

|- style="height:2em" | rowspan=3 Template:List of United States senators Congress

|- style="height:2em" | colspan=3 | Vacant | nowrap | Nov 3, 1933 –
Dec 18, 1933 |  

|- style="height:2em" ! rowspan=10 | 4 | rowspan=10 align=left |
Joseph C. O'Mahoney | rowspan=10 Template:Party shading/Democratic | Democratic | rowspan=10 nowrap | Dec 18, 1933 –
Jan 3, 1953 | Appointed to continue Kendrick's term.Template:PbElected in 1934 to finish Kendrick's term.

|- style="height:2em" | rowspan=3 | Elected in 1934. | rowspan=3 | 9 | Template:List of United States senators Congress

|- style="height:2em" | Template:List of United States senators Congress | rowspan=3 | 9 | rowspan=3 | Elected in 1936.Template:PbLost re-election. | rowspan=3 nowrap | Jan 3, 1937 –
Jan 3, 1943 | rowspan=3 Template:Party shading/Democratic | Democratic | rowspan=3 align=right |
Harry Schwartz ! rowspan=3 | 5

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|- style="height:2em" | rowspan=3 | Re-elected in 1940. | rowspan=3 | 10 | Template:List of United States senators Congress

|- style="height:2em" | Template:List of United States senators Congress | rowspan=3 | 10 | rowspan=3 | Elected in 1942.Template:PbLost re-election. | rowspan=3 nowrap | Jan 3, 1943 –
Jan 3, 1949 | rowspan=3 Template:Party shading/Republican | Republican | rowspan=3 align=right |
Edward V. Robertson ! rowspan=3 | 6

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|- style="height:2em" | rowspan=3 | Re-elected in 1946.Template:PbLost re-election. | rowspan=3 | 11 | Template:List of United States senators Congress

|- style="height:2em" | Template:List of United States senators Congress | rowspan=6 | 11 | rowspan=3 | Elected in 1948.Template:PbDied. | rowspan=3 nowrap | Jan 3, 1949 –
Jun 19, 1954 | rowspan=3 Template:Party shading/Democratic | Democratic | rowspan=3 align=right |
Lester C. Hunt ! rowspan=3 | 7

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|- style="height:2em" ! rowspan=6 | 5 | rowspan=6 align=left |
Frank A. Barrett | rowspan=6 Template:Party shading/Republican | Republican | rowspan=6 nowrap | Jan 3, 1953 –
Jan 3, 1959 | rowspan=6 | Elected in 1952.Template:PbLost re-election. | rowspan=6 | 12 | rowspan=4 Template:List of United States senators Congress

|- style="height:2em" |   | nowrap | Jun 19, 1954 –
Jun 24, 1954 | colspan=3 | Vacant

|- style="height:2em" | Appointed to continue Hunt's term.Template:PbRetired when successor elected. | nowrap | Jun 24, 1954 –
Nov 28, 1954 | Template:Party shading/Republican | Republican | align=right |
Edward D. Crippa ! 8

|- style="height:2em" | Elected in 1954 to finish Hunt's term. | rowspan=4 nowrap | Nov 29, 1954 –
Jan 3, 1961 | rowspan=4 Template:Party shading/Democratic | Democratic | rowspan=4 align=right |
Joseph C. O'Mahoney ! rowspan=4 | 9

|- style="height:2em" | Template:List of United States senators Congress | rowspan=3 | 12 | rowspan=3 | Elected to full term in 1954.Template:PbRetired.

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|- style="height:2em" ! rowspan=10 | 6 | rowspan=10 align=left |
Gale W. McGee | rowspan=10 Template:Party shading/Democratic | Democratic | rowspan=10 nowrap | Jan 3, 1959 –
Jan 3, 1977 | rowspan=4 | Elected in 1958. | rowspan=4 | 13 | Template:List of United States senators Congress

|- style="height:2em" | rowspan=2 Template:List of United States senators Congress | rowspan=4 | 13 | Appointed to begin the term of Keith Thomson (R), who was elected in 1960 but died before the Congress began.Template:PbLost election to finish Thomson's term. | nowrap | Jan 3, 1961 –
Nov 6, 1962 | Template:Party shading/Democratic | Democratic | align=right |
Joe Hickey ! 10

|- style="height:2em" | rowspan=3 | Elected to finish Thomson's term.Template:PbRetired. | rowspan=3 nowrap | Nov 7, 1962 –
Jan 3, 1967 | rowspan=3 Template:Party shading/Republican | Republican | rowspan=3 align=right |
Milward Simpson ! rowspan=3 | 11

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|- style="height:2em" | rowspan=3 | Re-elected in 1964. | rowspan=3 | 14 | Template:List of United States senators Congress

|- style="height:2em" | Template:List of United States senators Congress | rowspan=3 | 14 | rowspan=3 | Elected in 1966. | rowspan=6 nowrap | Jan 3, 1967 –
Dec 31, 1978 | rowspan=6 Template:Party shading/Republican | Republican | rowspan=6 align=right |
Clifford Hansen ! rowspan=6 | 12

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|- style="height:2em" | rowspan=3 | Re-elected in 1970.Template:PbLost re-election. | rowspan=3 | 15 | Template:List of United States senators Congress

|- style="height:2em" | Template:List of United States senators Congress | rowspan=4 | 15 | rowspan=3 | Re-elected in 1972.Template:PbRetired and resigned early to give successor preferential seniority.

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|- style="height:2em" ! rowspan=10 | 7 | rowspan=10 align=left |
Malcolm Wallop | rowspan=10 Template:Party shading/Republican | Republican | rowspan=10 nowrap | Jan 3, 1977 –
Jan 3, 1995 | rowspan=4 | Elected in 1976. | rowspan=4 | 16 | rowspan=2 Template:List of United States senators Congress

|- style="height:2em" | Appointed to finish Hansen's term, having already been elected to the next term. | rowspan=10 nowrap | Jan 1, 1979 –
Jan 3, 1997 | rowspan=10 Template:Party shading/Republican | Republican | rowspan=10 align=right |
Alan Simpson ! rowspan=10 | 13

|- style="height:2em" | Template:List of United States senators Congress | rowspan=3 | 16 | rowspan=3 | Elected in 1978.

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|- style="height:2em" | rowspan=3 | Re-elected in 1982. | rowspan=3 | 17 | Template:List of United States senators Congress

|- style="height:2em" | Template:List of United States senators Congress | rowspan=3 | 17 | rowspan=3 | Re-elected in 1984.

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|- style="height:2em" | rowspan=3 | Re-elected in 1988.Template:PbRetired. | rowspan=3 | 18 | Template:List of United States senators Congress

|- style="height:2em" | Template:List of United States senators Congress | rowspan=3 | 18 | rowspan=3 | Re-elected in 1990.Template:PbRetired.

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|- style="height:2em" ! rowspan=7 | 8 | rowspan=7 align=left |
Craig Thomas | rowspan=7 Template:Party shading/Republican | Republican | rowspan=7 nowrap | Jan 3, 1995 –
Jun 4, 2007 | rowspan=3 | Elected in 1994. | rowspan=3 | 19 | Template:List of United States senators Congress

|- style="height:2em" | Template:List of United States senators Congress | rowspan=3 | 19 | rowspan=3 | Elected in 1996. | rowspan=14 nowrap | Jan 3, 1997 –
Jan 3, 2021 | rowspan=14 Template:Party shading/Republican | Republican | rowspan=14 align=right |
Mike Enzi ! rowspan=14 | 14

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|- style="height:2em" | rowspan=3 | Re-elected in 2000. | rowspan=3 | 20 | Template:List of United States senators Congress

|- style="height:2em" | Template:List of United States senators Congress | rowspan=5 | 20 | rowspan=5 | Re-elected in 2002.

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|- style="height:2em" | Re-elected in 2006.Template:PbDied. | rowspan=5 | 21 | rowspan=3 Template:List of United States senators Congress

|- style="height:2em" | colspan=3 | Vacant | nowrap | Jun 4, 2007 –
Jun 22, 2007

|- style="height:2em" ! rowspan=11 | 9 | rowspan=11 align=left |
John Barrasso | rowspan=11 Template:Party shading/Republican | Republican | rowspan=11 nowrap | Jun 22, 2007 –
present | rowspan=3 | Appointed to continue Thomas's term.Template:PbElected in 2008 to finish Thomas's term.

|- style="height:2em" | Template:List of United States senators Congress | rowspan=3 | 21 | rowspan=3 | Re-elected in 2008.

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|- style="height:2em" | rowspan=3 | Re-elected in 2012. | rowspan=3 | 22 | Template:List of United States senators Congress

|- style="height:2em" | Template:List of United States senators Congress | rowspan=3 | 22 | rowspan=3 | Re-elected in 2014.Template:PbRetired.

|- style="height:2em" | Template:List of United States senators Congress

|- style="height:2em" | rowspan=3 | Re-elected in 2018. | rowspan=3 | 23 | Template:List of United States senators Congress

|- style="height:2em" | Template:List of United States senators Congress | rowspan=3 | 23 | rowspan=3 | Elected in 2020. | rowspan=3 nowrap | Jan 3, 2021 –
present | rowspan=3 Template:Party shading/Republican | Republican | rowspan=3 align=right |
Cynthia Lummis ! rowspan=3 | 15

|- style="height:2em" | Template:List of United States senators Congress

|- style="height:2em" | rowspan=2| Re-elected in 2024. | rowspan=2|24 | Template:List of United States senators Congress

|- style="height:2em" | Template:List of United States senators Congress | 24 | colspan=5 | To be determined in the 2026 election.

See also

• List of United States representatives from Wyoming
• List of United States Senate elections in Wyoming
• United States congressional delegations from Wyoming

External links

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