1181
| Years | 
|---|
| Millennium | 
| 2nd millennium | 
| Centuries | 
| Decades | 
| Years | 
| 1181 by topic | 
|---|
| Leaders | 
| 
 | 
| Birth and death categories | 
| Births – Deaths | 
| Establishments and disestablishments categories | 
| Establishments – Disestablishments | 
| Art and literature | 
| 1181 in poetry | 
| Gregorian calendar | 1181 MCLXXXI | 
| Ab urbe condita | 1934 | 
| Armenian calendar | 630 ԹՎ ՈԼ | 
| Assyrian calendar | 5931 | 
| Balinese saka calendar | 1102–1103 | 
| Bengali calendar | 587–588 | 
| Berber calendar | 2131 | 
| English Regnal year | 27 Hen. 2 – 28 Hen. 2 | 
| Buddhist calendar | 1725 | 
| Burmese calendar | 543 | 
| Byzantine calendar | 6689–6690 | 
| Chinese calendar | 庚子年 (Metal Rat) 3878 or 3671 — to — 辛丑年 (Metal Ox) 3879 or 3672 | 
| Coptic calendar | 897–898 | 
| Discordian calendar | 2347 | 
| Ethiopian calendar | 1173–1174 | 
| Hebrew calendar | 4941–4942 | 
| Hindu calendars | |
| - Vikram Samvat | 1237–1238 | 
| - Shaka Samvat | 1102–1103 | 
| - Kali Yuga | 4281–4282 | 
| Holocene calendar | 11181 | 
| Igbo calendar | 181–182 | 
| Iranian calendar | 559–560 | 
| Islamic calendar | 576–577 | 
| Japanese calendar | Jishō 5 / Yōwa 1 (養和元年) | 
| Javanese calendar | 1088–1089 | 
| Julian calendar | 1181 MCLXXXI | 
| Korean calendar | 3514 | 
| Minguo calendar | 731 before ROC 民前731年 | 
| Nanakshahi calendar | −287 | 
| Seleucid era | 1492/1493 AG | 
| Thai solar calendar | 1723–1724 | 
| Tibetan calendar | 阳金鼠年 (male Iron-Rat) 1307 or 926 or 154 — to — 阴金牛年 (female Iron-Ox) 1308 or 927 or 155 | 
Year 1181 (MCLXXXI) was a common year starting on Thursday of the Julian calendar.