- 0 ... 12-hydroxyloleic acid
- 12-step program ... 1857, Panic of
- 1860, Movement of ... 1MDB
- 1O1 ... 2020 presidential election
- 2021 Eastern Australian floods ... 3200 Phaethon
- 323 Brucia ... 5-phosphoribose 1-pyrophosphate
- 50 Cent ... 84 Charing Cross Road
- 86-DOS ... 9to5, National Association of Working Women