2020 Wyoming Senate election
The 2020 Wyoming State Senate elections was held as part of the biennial elections in the United States. Wyoming voters elected state senators in 15 of the 30 state Senate districts. State senators serve four-year terms in the Wyoming State Senate.
Elections for the office of Wyoming State Senate took place in 2020. The general election was held on November 3, 2020. A primary was scheduled for August 18, 2020. The filing deadline was May 29, 2020.
Retirements
Four incumbents did not run for re-election in 2020. Those incumbents are:Republicans
- District 10: Glenn Moniz: Retiring
- District 18: Hank Coe: Retiring
- District 20: Wyatt Agar: Retiring
- District 26: Eli Bebout: Retiring
Incumbents defeated
In primary elections
Republicans
One Republicans lost renomination.- District 24: Michael Von Flatern lost renomination to Troy McKeown.
In the general election
Democrats
- District 12: Liisa Anselmi-Dalton lost to John Kolb.
Close races
| District | Winner | Margin |
| District 12 | Republican | 12.0% |
| District 10 | Republican | 12.5% |