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| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 291 by topic |
|---|
| Leaders |
| Categories |
| 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) 2988 or 2781 — to — 辛亥年 (Metal Pig) 2989 or 2782 |
| 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 (link will display the full calendar) of the Julian calendar. At the time, it was known in Rome as the Year of the Consulship of Tiberianus and Dio (or, less frequently, year 1044 Ab urbe condita). The denomination 291 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.