The 2021 Trafford Metropolitan Borough Council election to elect members of Trafford Metropolitan Borough Council in England took place on 6 May 2021. As with many other local elections in England, it was postponed from May 2020, due to the COVID-19 pandemic.
One third of council seats were contested in the election, with each successful candidate serving a two-year term of office rather than the normal four due to a boundary review to be implemented in 2023. Four additional seats were also contested in concurrent by-elections; seats which had become vacant due to deaths and resignations.