2021 Bolton Metropolitan Borough Council election

The 2021 Bolton Metropolitan Borough Council election to elect members of Bolton Metropolitan Borough Council took place on 6 May 2021, on the same day as other local elections.

21 seats were contested, including a by election in Astley Bridge Ward, following the death of Cllr Paul Wild. The Conservative Party won 10 seats, the Labour Party won 7 seats, Farnworth and Kearsley First won 2 seats, Horwich and Blackrod First won 1 seat, and the Liberal Democrats won 1 seat.

After the election, the total composition of the council was as follows:
 * Conservative 20
 * Labour 19
 * Liberal Democrats 5
 * Farnworth and Kearsley First 5
 * Horwich and Blackrod First 3
 * UK Independence Party 1
 * Independents 7

Council composition
Prior to the election the composition of the council was:

After the election the composition of the council was:

LD - Liberal Democrats

U - UKIP

IND - Independent (politician)

Ward results
Winning candidates are highlighted in bold.