1171
| Years | 
|---|
| Millennium | 
| 2nd millennium | 
| Centuries | 
| Decades | 
| Years | 
| 1171 by topic | 
|---|
| Leaders | 
| 
 | 
| Birth and death categories | 
| Births – Deaths | 
| Establishments and disestablishments categories | 
| Establishments – Disestablishments | 
| Art and literature | 
| 1171 in poetry | 
| Gregorian calendar | 1171 MCLXXI | 
| Ab urbe condita | 1924 | 
| Armenian calendar | 620 ԹՎ ՈԻ | 
| Assyrian calendar | 5921 | 
| Balinese saka calendar | 1092–1093 | 
| Bengali calendar | 577–578 | 
| Berber calendar | 2121 | 
| English Regnal year | 17 Hen. 2 – 18 Hen. 2 | 
| Buddhist calendar | 1715 | 
| Burmese calendar | 533 | 
| Byzantine calendar | 6679–6680 | 
| Chinese calendar | 庚寅年 (Metal Tiger) 3868 or 3661 — to — 辛卯年 (Metal Rabbit) 3869 or 3662 | 
| Coptic calendar | 887–888 | 
| Discordian calendar | 2337 | 
| Ethiopian calendar | 1163–1164 | 
| Hebrew calendar | 4931–4932 | 
| Hindu calendars | |
| - Vikram Samvat | 1227–1228 | 
| - Shaka Samvat | 1092–1093 | 
| - Kali Yuga | 4271–4272 | 
| Holocene calendar | 11171 | 
| Igbo calendar | 171–172 | 
| Iranian calendar | 549–550 | 
| Islamic calendar | 566–567 | 
| Japanese calendar | Kaō 3 / Jōan 1 (承安元年) | 
| Javanese calendar | 1078–1079 | 
| Julian calendar | 1171 MCLXXI | 
| Korean calendar | 3504 | 
| Minguo calendar | 741 before ROC 民前741年 | 
| Nanakshahi calendar | −297 | 
| Seleucid era | 1482/1483 AG | 
| Thai solar calendar | 1713–1714 | 
| Tibetan calendar | 阳金虎年 (male Iron-Tiger) 1297 or 916 or 144 — to — 阴金兔年 (female Iron-Rabbit) 1298 or 917 or 145 | 
Year 1171 (MCLXXI) was a common year starting on Friday of the Julian calendar.