| Election Name: | 2020 Vermont Senate election |
| Country: | Vermont |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | 2018 Vermont Senate election |
| Previous Year: | 2018 |
| Next Election: | 2022 Vermont Senate election |
| Next Year: | 2022 |
| Seats For Election: | All 30 seats in the Vermont Senate |
| Majority Seats: | 16 |
| Election Date: | November 3, 2020 |
| Image1: | Tim ashe vermont politician (cropped).jpg |
| Leader1: | Tim Ashe (retired) |
| Party1: | Democratic Party (United States) |
| Leader Since1: | January 6, 2017 |
| Leaders Seat1: | Chittenden |
| Last Election1: | 22 |
| Seats1: | 21 |
| Seat Change1: | 1 |
| Popular Vote1: | 481,506 |
| Percentage1: | 53.7% |
| Swing1: | 7.1% |
| Leader2: | Joe Benning |
| Party2: | Republican Party (United States) |
| Leader Since2: | January 4, 2018 |
| Leaders Seat2: | Caledonia |
| Last Election2: | 6 |
| Seats2: | 7 |
| Seat Change2: | 1 |
| Popular Vote2: | 311,329 |
| Percentage2: | 34.7% |
| Swing2: | 8.7% |
| Image3: | Anthony Pollina (cropped).jpg |
| Leader3: | Anthony Pollina |
| Party3: | Vermont Progressive Party |
| Leader Since3: | 2013 |
| Leaders Seat3: | Washington |
| Last Election3: | 2 |
| Seats3: | 2 |
| Popular Vote3: | 56,397 |
| Percentage3: | 6.3% |
| Swing3: | 0.3% |
| Map Size: | 200px |
| President pro tempore | |
| Before Election: | Tim Ashe |
| Before Party: | Democratic Party (United States) |
| After Election: | Becca Balint |
| After Party: | Democratic Party (United States) |
The 2020 Vermont Senate elections took place as part of the biennial United States elections. Vermont voters elected all 30 state senators from 13 districts, with each district electing between one and six senators. State senators serve two-year terms in the Vermont Senate. A primary election on August 11, 2020, determined which candidates appeared on the November 3 general election ballot. All the members elected would serve in the Vermont General Assembly.
Three incumbent senators (two Democrats and one Republican) did not seek reelection.
No incumbent senator was defeated in the August 11 primary.
One incumbent senator sought reelection but was defeated in the general election.
| align=center | Addison • Bennington • Caledonia • Chittenden • Essex-Orleans • Franklin • Grand Isle • Lamoille • Orange • Rutland • Washington • Windham • Windsor |
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Republican primary
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