2021
| Years: 2018 2019 2020 - 2021 - 2022 2023 2024 | |
| Decades: 1990s 2000s 2010s - 2020s - 2030s 2040s 2050s | |
| Centuries: 20th century - 21st century - 22nd century | |
Events
- The song Happy Birthday is scheduled to go into the public domain (as of 2002)
- P.D. James's dystopian novel The Children of Men (1992) is set in the England of 2021.