121
- This article is about the year. For other uses, see number 121.
| Years: 117 118 119 120 - 121 - 122 123 124 125 | |
| Decades: 90s 100s 110s - 120s - 130s 140s 150s | |
| Centuries: 1st century - 2nd century - 3rd century 121 (number) | |
Events
- Era name changes from Yongning (2nd year) to Jianguang in the Chinese Eastern Han Dynasty.
- Roman settlement in present-day Wiesbaden, Germany is first mentioned.
- Roman emperor Hadrian fixes the border between Roman Britain and Caledonia on a line running from the River Tyne to the Solway Firth.
Births
- April 26 - Marcus Annius Verus, later the Roman Emperor Marcus Aurelius
