The 2021 Adur District Council elections took place on 6 May 2021 to elect members of Adur District Council in West Sussex, England. Half of the council was up for election, and the Conservative Party remained in overall control of the council.
These seats were due to be contested in 2020 but were delayed by one year due to the COVID-19 pandemic. This election was held concurrently with other elections across the United Kingdom.