1311
| Years | 
|---|
| Millennium | 
| 2nd millennium | 
| Centuries | 
| Decades | 
| Years | 
| 1311 by topic | 
|---|
| Leaders | 
| 
 | 
| Birth and death categories | 
| Births – Deaths | 
| Establishments and disestablishments categories | 
| Establishments – Disestablishments | 
| Art and literature | 
| 1311 in poetry | 
| Gregorian calendar | 1311 MCCCXI | 
| Ab urbe condita | 2064 | 
| Armenian calendar | 760 ԹՎ ՉԿ | 
| Assyrian calendar | 6061 | 
| Balinese saka calendar | 1232–1233 | 
| Bengali calendar | 717–718 | 
| Berber calendar | 2261 | 
| English Regnal year | 4 Edw. 2 – 5 Edw. 2 | 
| Buddhist calendar | 1855 | 
| Burmese calendar | 673 | 
| Byzantine calendar | 6819–6820 | 
| Chinese calendar | 庚戌年 (Metal Dog) 4008 or 3801 — to — 辛亥年 (Metal Pig) 4009 or 3802 | 
| Coptic calendar | 1027–1028 | 
| Discordian calendar | 2477 | 
| Ethiopian calendar | 1303–1304 | 
| Hebrew calendar | 5071–5072 | 
| Hindu calendars | |
| - Vikram Samvat | 1367–1368 | 
| - Shaka Samvat | 1232–1233 | 
| - Kali Yuga | 4411–4412 | 
| Holocene calendar | 11311 | 
| Igbo calendar | 311–312 | 
| Iranian calendar | 689–690 | 
| Islamic calendar | 710–711 | 
| Japanese calendar | Enkyō 4 / Ōchō 1 (応長元年) | 
| Javanese calendar | 1222–1223 | 
| Julian calendar | 1311 MCCCXI | 
| Korean calendar | 3644 | 
| Minguo calendar | 601 before ROC 民前601年 | 
| Nanakshahi calendar | −157 | 
| Thai solar calendar | 1853–1854 | 
| Tibetan calendar | 阳金狗年 (male Iron-Dog) 1437 or 1056 or 284 — to — 阴金猪年 (female Iron-Pig) 1438 or 1057 or 285 | 
Year 1311 (MCCCXI) was a common year starting on Friday of the Julian calendar.