The 2021 Wiltshire Council election took place on 6 May 2021 as part of the 2021 local elections in the United Kingdom. All 98 councillors were elected from electoral divisions which returned one councillor each by first-past-the-post voting for a four-year term of office.
After the previous election the composition of the council was:
Prior to the election the composition of the council was:
After the election the composition of the council was:
The electoral division results listed below are based on the changes from the 2017 elections, not taking into account any party defections or by-elections.
Sitting councillors are marked with an asterisk (*).
Note: in 2017, Ian Blair-Pilling was elected in the Collingbournes and Netheravon
Note: Nick Holder was elected in a 2019 by-election in Melksham Without South.
Note: in 2017, Chris Hirst was elected in Royal Wootton Bassett South
Note: in 2017, Laura Evelyn Mayes was elected in Roundway
Note: Tony Trotman died in November 2023 and a by-election took place in February 2024
Note: Bob Jones died in January 2024 and a by-election took place in March 2024
Note: Suzanne Grahem Wickham had previously held the seat for the Conservatives in a 2019 by-election.
Note: Stuart Wheeler was elected in 2017 in Burbage and The Bedwyns
Note: Paul Oatway was elected in 2017 in Pewsey Vale
Note: Mary Webb died in August 2022, and a by-election took place in November 2022
Note: Mark Connolly had been elected in 2017 for the previous seat called Tidworth.
Note: Kevin Daley had held the seat of Till and Wylye Valley in a 2020 by-election.
Note: Andrew James Bryant had previously gained the seat for the Liberal Democrats in a 2019 by-election.
Note: Jo Trigg had previously gained the seat for the Liberal Democrats in a 2019 by-election.
Note: in 2017, Phillip Whitehead was elected in Urchfont and The Cannings
Note: Carole King had previously held the seat for the Liberal Democrats in a 2019 by-election.
Note: in 2017, Matthew Dean was elected in Salisbury St Pauls
Note: in 2017, Pauline Elizabeth Church was elected in Wilton and Lower Wylye Valley
Note: in 2017, Christopher Newbury was elected in the former Warminster Copheap and Wylye