| Election Name: | 2008 Wyoming Senate election |
| Country: | Wyoming |
| Type: | legislative |
| Previous Election: | 2006 Wyoming Senate election |
| Previous Year: | 2006 |
| Next Election: | 2010 Wyoming Senate election |
| Next Year: | 2010 |
| Seats For Election: | 16 of 30 seats in the Wyoming Senate (District 27 and even-numbered seats up) |
| Leader1: | John Schiffer |
| Party1: | Republican Party (United States) |
| Leaders Seat1: | 23rd district |
| Seats Before1: | 22 |
| Seats After1: | 23 |
| Seat Change1: | 1 |
| Popular Vote1: | 94,980 |
| Percentage1: | 78.00% |
| Leader2: | Ken Decaria |
| Party2: | Democratic Party (United States) |
| Leaders Seat2: | 15th district |
| Seats Before2: | 7 |
| Seats After2: | 7 |
| Popular Vote2: | 25,203 |
| Percentage2: | 20.70% |
| Map Size: | 350px |
| Senate President | |
| Before Election: | John Schiffer |
| Before Party: | Republican Party (United States) |
| After Election: | John Hines |
| After Party: | Republican Party (United States) |
The 2008 Wyoming Senate election was held on November 4, 2008, to elect members to the Wyoming Senate for its 60th session as part of the 2008 United States elections. All even-numbered seats were up for election. An additional election was held in District 27 as incumbent Republican John Barrasso retired in 2007 after being appointed to the U.S. Senate. Partisan primaries were held on August 19. Neither party gained any seat in the legislature, and both Democratic incumbents stood unopposed in the general election.
| Party | Candidates | Votes | % | Seats | |||||
|---|---|---|---|---|---|---|---|---|---|
| Before | Up | Won | After | +/– | |||||
| Republican | 14 | 94,980 | 78.0 | 22 | 13 | 14 | 23 | 1 | |
| Democratic | 7 | 25,203 | 20.7 | 7 | 2 | 2 | 7 | ||
| Write-in | 1,582 | 1.3 | — | ||||||
| Valid ballots | 121,765 | 87.14 | — | ||||||
| Blank or invalid ballots | 17,969 | 12.89 | — | ||||||
| Total | 139,734 | 100% | 30 (1 v.) | 16 (1 v.) | 15 | 30 | |||