The 2021 Doncaster Metropolitan Borough Council election took place on 6 May 2021 as part of the 2021 local elections in the United Kingdom. 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.
Following the last election in 2017, the composition of the council was:
After the election, the composition of the council was:
<span style="color:blackk;">MF</span> - Mexborough First <br /> <span style="color:#DDDDDD;">I</span> - Independent <br /> <span style="color:#DDDDDD;">E</span> - Edlington and Warmsworth First
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.
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'.