| Millennium: | 2nd millennium | 
|---|---|
| Centuries: | |
| Decades: | |
| Years: | 
| 1081 by topic | |
| Lists of leaders | |
| Political entities - State leaders - Religious leaders | |
| Birth and death categories | |
| Births – Deaths | |
| Establishments and disestablishments categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 1081 MLXXXI | 
| Ab urbe condita | 1834 | 
| Armenian calendar | 530 ԹՎ ՇԼ | 
| Assyrian calendar | 5831 | 
| Bengali calendar | 488 | 
| Berber calendar | 2031 | 
| English Regnal year | 15 Will. 1 – 16 Will. 1 | 
| Buddhist calendar | 1625 | 
| Burmese calendar | 443 | 
| Byzantine calendar | 6589–6590 | 
| Chinese calendar | 庚申年 (Metal Monkey) 3777 or 3717 — to — 辛酉年 (Metal Rooster) 3778 or 3718 | 
| Coptic calendar | 797–798 | 
| Discordian calendar | 2247 | 
| Ethiopian calendar | 1073–1074 | 
| Hebrew calendar | 4841–4842 | 
| Hindu calendars | |
| - Vikram Samvat | 1137–1138 | 
| - Shaka Samvat | 1002–1003 | 
| - Kali Yuga | 4181–4182 | 
| Holocene calendar | 11081 | 
| Igbo calendar | 81–82 | 
| Iranian calendar | 459–460 | 
| Islamic calendar | 473–474 | 
| Japanese calendar | Jōryaku 5 / Eihō 1 (永保元年) | 
| Javanese calendar | 985–986 | 
| Julian calendar | 1081 MLXXXI | 
| Korean calendar | 3414 | 
| Minguo calendar | 831 before ROC 民前831年 | 
| Nanakshahi calendar | −387 | 
| Seleucid era | 1392/1393 AG | 
| Thai solar calendar | 1623–1624 | 
Year 1081 (MLXXXI) was a common year starting on Friday (link will display the full calendar) of the Julian calendar.