| Millennium: | 2nd millennium | 
|---|---|
| Centuries: | |
| Decades: | |
| Years: | 
| 1271 by topic | |
| Leaders | |
| Political entities - State leaders - Religious leaders | |
| Birth and death categories | |
| Births – Deaths | |
| Establishments and disestablishments categories | |
| Establishments – Disestablishments | |
| Art and literature | |
| 1271 in poetry | |
| Gregorian calendar | 1271 MCCLXXI | 
| Ab urbe condita | 2024 | 
| Armenian calendar | 720 ԹՎ ՉԻ | 
| Assyrian calendar | 6021 | 
| Bengali calendar | 678 | 
| Berber calendar | 2221 | 
| English Regnal year | 55 Hen. 3 – 56 Hen. 3 | 
| Buddhist calendar | 1815 | 
| Burmese calendar | 633 | 
| Byzantine calendar | 6779–6780 | 
| Chinese calendar | 庚午年 (Metal Horse) 3967 or 3907 — to — 辛未年 (Metal Goat) 3968 or 3908 | 
| Coptic calendar | 987–988 | 
| Discordian calendar | 2437 | 
| Ethiopian calendar | 1263–1264 | 
| Hebrew calendar | 5031–5032 | 
| Hindu calendars | |
| - Vikram Samvat | 1327–1328 | 
| - Shaka Samvat | 1192–1193 | 
| - Kali Yuga | 4371–4372 | 
| Holocene calendar | 11271 | 
| Igbo calendar | 271–272 | 
| Iranian calendar | 649–650 | 
| Islamic calendar | 669–670 | 
| Japanese calendar | Bun'ei 8 (文永8年) | 
| Javanese calendar | 1181–1182 | 
| Julian calendar | 1271 MCCLXXI | 
| Korean calendar | 3604 | 
| Minguo calendar | 641 before ROC 民前641年 | 
| Nanakshahi calendar | −197 | 
| Thai solar calendar | 1813–1814 | 
Year 1271 (MCCLXXI) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar.