| Election Name: | 2020 Georgia State Senate election |
| Country: | Georgia (U.S. state) |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | 2018 Georgia State Senate election |
| Previous Year: | 2018 |
| Next Election: | 2022 Georgia State Senate election |
| Next Year: | 2022 |
| Seats For Election: | All 56 seats in the Georgia State Senate |
| Majority Seats: | 29 |
| Election Date: | November 3, 2020 |
| Leader1: | Butch Miller |
| Party1: | Republican Party (United States) |
| Leaders Seat1: | 49th |
| Last Election1: | 35 |
| Seats After1: | 34 |
| Seat Change1: | 1 |
| Popular Vote1: | 2,419,281 |
| Percentage1: | 54.58% |
| Swing1: | 0.16% |
| Leader2: | Steve Henson |
| Party2: | Democratic Party (United States) |
| Leaders Seat2: | 41st |
| Last Election2: | 21 |
| Seats After2: | 22 |
| Seat Change2: | 1 |
| Popular Vote2: | 2,013,405 |
| Percentage2: | 45.42% |
| Swing2: | 0.16% |
| Map Size: | 400px |
| President pro tempore | |
| Before Election: | Butch Miller |
| Before Party: | Republican Party (United States) |
| After Election: | Butch Miller |
| After Party: | Republican Party (United States) |
The 2020 Georgia State Senate election was held on November 3, 2020. Georgia voters elected state senators in all 56 of the state senate's districts to the 156th Georgia General Assembly for two-year terms in the Georgia State Senate. The elections coincided with the 2020 United States presidential election, 2020 United States House of Representatives elections, 2020 Georgia House of Representatives election, and more.
Seats where the margin of victory was under 10%:
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Incumbent senator Nikema Williams resigned to run for Georgia's 5th congressional district, which John Lewis represented until his death. A special primary took place on November 3, 2020, and a runoff took place December 1, 2020. No Republican had filed to face Williams in the general election, so the special primary acted as the general election.