291
| Millennium: | 1st millennium |
|---|---|
| Centuries: | 2nd century – 3rd century – 4th century |
| Decades: | 260s 270s 280s – 290s – 300s 310s 320s |
| Years: | 288 289 290 – 291 – 292 293 294 |
| Gregorian calendar | 291 CCXCI |
| Ab urbe condita | 1044 |
| Assyrian calendar | 5041 |
| Balinese saka calendar | 212–213 |
| Bengali calendar | −302 |
| Berber calendar | 1241 |
| Buddhist calendar | 835 |
| Burmese calendar | −347 |
| Byzantine calendar | 5799–5800 |
| Chinese calendar | 庚戌年 (Metal Dog) 2987 or 2927 — to — 辛亥年 (Metal Pig) 2988 or 2928 |
| Coptic calendar | 7–8 |
| Discordian calendar | 1457 |
| Ethiopian calendar | 283–284 |
| Hebrew calendar | 4051–4052 |
| Hindu calendars | |
| - Vikram Samvat | 347–348 |
| - Shaka Samvat | 212–213 |
| - Kali Yuga | 3391–3392 |
| Holocene calendar | 10291 |
| Iranian calendar | 331 BP – 330 BP |
| Islamic calendar | 341 BH – 340 BH |
| Javanese calendar | 171–172 |
| Julian calendar | 291 CCXCI |
| Korean calendar | 2624 |
| Minguo calendar | 1621 before ROC 民前1621年 |
| Nanakshahi calendar | −1177 |
| Seleucid era | 602/603 AG |
| Thai solar calendar | 833–834 |
| Tibetan calendar | 阳金狗年 (male Iron-Dog) 417 or 36 or −736 — to — 阴金猪年 (female Iron-Pig) 418 or 37 or −735 |
Year 291 (CCXCI) was a common year starting on Thursday of the Julian calendar.
Events
By place
Roman Empire
- Emperor Diocletian signs peace treaties with the kingdoms of Aksum and Nubia.
China
- War of the Eight Princes: After the death of Emperor Sima Yan a civil war starts among the princes and dukes of the Jin Dynasty.
Births
- Li Xiu, female general during the Jin Dynasty
- Saint Agnes, Christian martyress (d. c. 304)
- Saint Hilarion, anchorite and saint (d. 371)
- Saint Philomena, Christian martyress (d. c. 304)