| Election Name: | 2021 Doncaster Metropolitan Borough Council election |
| Type: | Parliamentary |
| Ongoing: | no |
| Party Colour: | yes |
| Previous Election: | 2017 Doncaster Metropolitan Borough Council election |
| Previous Year: | 2017 |
| Next Year: | 2025 |
| Seats For Election: | All 55 seats to Doncaster Metropolitan Borough Council |
| Majority Seats: | 28 |
| Election Date: | 6 May 2021 |
| Party1: | Labour Party (UK) |
| Last Election1: | 43 |
| Seats1: | 40 |
| Seat Change1: | 3 |
| Popular Vote1: | 65,647 |
| Percentage1: | 46.6% |
| Party2: | Conservative Party (UK) |
| Last Election2: | 7 |
| Seats2: | 11 |
| Seat Change2: | 4 |
| Popular Vote2: | 46,886 |
| Percentage2: | 33.3% |
| Party4: | Mexborough First |
| Last Election4: | 3 |
| Seats4: | 3 |
| Popular Vote4: | 4,923 |
| Percentage4: | 3.5% |
| Party5: | Edlington and Warmsworth First |
| Last Election5: | 0 |
| Seats5: | 1 |
| Seat Change5: | 1 |
| Popular Vote5: | 1,444 |
| Percentage5: | 1.0% |
| Map Size: | 300px |
| Council control | |
| Posttitle: | Council control after election |
| Before Election: | Labour |
| After Election: | Labour |
The 2021 Doncaster Metropolitan Borough Council election took place on 6 May 2021 as part of the 2021 local elections in the United Kingdom.[1] All 55 councillors were elected from 21 wards which return either two or three councillors each by first-past-the-post voting for a four-year term of office.
The election of the Mayor of Doncaster also took place on the same day.
Doncaster is divided into 21 wards for electoral purposes with each ward electing either two or three councillors. The number of councillors elected by ward is shown in the table below.
| Ward | Councillors | Prior to election | |
|---|---|---|---|
| Adwick-Le-Street and Carcroft | 3 | 3x Labour | |
| Armthorpe | 3 | 3x Labour | |
| Balby South | 2 | 2x Labour | |
| Bentley | 3 | 3x Labour | |
| Bessacarr | 3 | 2x Conservative, 1x Labour | |
| Conisbrough | 3 | 3x Labour | |
| Edenthorpe & Kirk Sandall | 2 | 2x Labour | |
| Edlington & Warmsworth | 2 | 2x Labour | |
| Finningley | 3 | 3x Conservative | |
| Hatfield | 3 | 3x Labour | |
| Hexthorpe & Balby North | 2 | 2x Labour | |
| Mexborough | 3 | 3x Mexborough First | |
| Norton & Askern | 3 | 2x Labour, 1x Conservative | |
| Roman Ridge | 2 | 2x Labour | |
| Rossington & Bawtry | 3 | 2x Labour, 1x Independent | |
| Sprotbrough | 2 | 2x Conservative | |
| Stainforth & Barnby Dun | 2 | 1x Labour, 1x Conservative | |
| Thorne & Moorends | 3 | 3x Labour | |
| Tickhill & Wadworth | 2 | 1x Independent, 1x Conservative | |
| Town | 3 | 3x Labour | |
| Wheatley Hills & Intake | 3 | 3x Labour |
Following the last election in 2017, the composition of the council was:
| 43 | 7 | 3 | 2 | |
| Labour | Conservative | MF | I |
After the election, the composition of the council was:
| 40 | 11 | 3 | 1 | |
| Labour | Conservative | MF | E |
Incumbent councillors are denoted by an asterisk.
Jonathan Wood was previously a Conservative councillor.
Both Ken Keegan and George Derx were previously elected as Labour councillors.
A by-election was held in the Wheatley Hills & Intake after the incumbent Labour Party councillor Daniel Barwell resigned following being arrested for an 'offence relating to the distribution of a controlled drug on a warrant issued at the request of United States authorities'.[2]