| Election Name: | 2021 Swindon Borough Council Election |
| Seats After3: | 0 |
| Popular Vote3: | 4,926 |
| Percentage3: | 7.7% |
| Seats3: | 0 |
| Map Size: | 300px |
| Council control | |
| Posttitle: | Council control after election |
| Before Election: | Conservatives |
| Seat Change3: | 2 |
| Seats Before3: | 2 |
| Seats Before1: | 30 |
| Type: | Parliamentary |
| Ongoing: | no |
| Party Colour: | yes |
| Previous Election: | 2019 Swindon Borough Council election |
| Previous Year: | 2019 |
| Next Election: | 2022 Swindon Borough Council election |
| Next Year: | 2022 |
| Seats For Election: | 21 of the 57 seats to Swindon Borough Council |
| Majority Seats: | 29 |
| Election Date: | 6 May 2021 |
| Party1: | Conservative Party (UK) |
| Seats1: | 16 |
| Party3: | Liberal Democrats (UK) |
| Seat Change1: | 6 |
| Seats After1: | 36 |
| Popular Vote1: | 31,282 |
| Percentage1: | 48.9% |
| Party2: | Labour Party (UK) |
| Seats Before2: | 24 |
| Seats2: | 5 |
| Seat Change2: | 4 |
| Seats After2: | 20 |
| Popular Vote2: | 20,692 |
| Percentage2: | 32.3% |
| After Election: | Conservatives |
Elections to Swindon Borough Council took place on 6 May 2021 as part of the 2021 local elections in the United Kingdom.[1] The Conservatives made 6 gains and secured a majority of 15, their best performance since the 2011 elections.