Events from the year 2021 in the United Kingdom. For a second year, the COVID-19 pandemic largely dominated events in the UK, as in most of the world.
| 2021 in the United Kingdom |
| Other years |
| 2019 | 2020 | 2021 | 2022 | 2023 |
| Countries of the United Kingdom |
| England | Northern Ireland | Scotland | Wales |
| Popular culture |