2021–2022 United Kingdom censuses

The 2021–2022 United Kingdom censuses collectively comprised the 23rd census of the United Kingdom.

The censuses of England and Wales, and Northern Ireland took place on 21 March 2021, and the census of Scotland took place 364 days later on 20 March 2022. The censuses were administered by the Office for National Statistics (ONS) in England and Wales, by the Northern Ireland Statistics and Research Agency (NISRA) in Northern Ireland, and by the National Records of Scotland in Scotland.

These were the first UK censuses for which most of the data was gathered online. Two of the censuses went ahead despite the COVID-19 pandemic, in part because the information obtained would assist government and public understanding of the pandemic's impact. The census in Scotland was postponed, and took place in 2022.

The censuses in 2021 and 2022 follow on from Beyond 2011, a project by the UK Statistics Authority to assess the value, cost, and alternatives to running a census in England and Wales in 2021. The project recommended an England and Wales census be held in 2021, and that it be conducted predominantly by means of online returns.

Initial results for England and Wales were released on 28 June 2022, while initial results for Scotland were released on 14 September 2023.