1087
| Years | 
|---|
| Millennium | 
| 2nd millennium | 
| Centuries | 
| Decades | 
| Years | 
| 1087 by topic | 
|---|
| Leaders | 
| 
 | 
| Birth and death categories | 
| Births – Deaths | 
| Establishments and disestablishments categories | 
| Establishments – Disestablishments | 
| Gregorian calendar | 1087 MLXXXVII | 
| Ab urbe condita | 1840 | 
| Armenian calendar | 536 ԹՎ ՇԼԶ | 
| Assyrian calendar | 5837 | 
| Balinese saka calendar | 1008–1009 | 
| Bengali calendar | 493–494 | 
| Berber calendar | 2037 | 
| English Regnal year | 21 Will. 1 – 1 Will. 2 | 
| Buddhist calendar | 1631 | 
| Burmese calendar | 449 | 
| Byzantine calendar | 6595–6596 | 
| Chinese calendar | 丙寅年 (Fire Tiger) 3784 or 3577 — to — 丁卯年 (Fire Rabbit) 3785 or 3578 | 
| Coptic calendar | 803–804 | 
| Discordian calendar | 2253 | 
| Ethiopian calendar | 1079–1080 | 
| Hebrew calendar | 4847–4848 | 
| Hindu calendars | |
| - Vikram Samvat | 1143–1144 | 
| - Shaka Samvat | 1008–1009 | 
| - Kali Yuga | 4187–4188 | 
| Holocene calendar | 11087 | 
| Igbo calendar | 87–88 | 
| Iranian calendar | 465–466 | 
| Islamic calendar | 479–480 | 
| Japanese calendar | Ōtoku 4 / Kanji 1 (寛治元年) | 
| Javanese calendar | 991–992 | 
| Julian calendar | 1087 MLXXXVII | 
| Korean calendar | 3420 | 
| Minguo calendar | 825 before ROC 民前825年 | 
| Nanakshahi calendar | −381 | 
| Seleucid era | 1398/1399 AG | 
| Thai solar calendar | 1629–1630 | 
| Tibetan calendar | 阳火虎年 (male Fire-Tiger) 1213 or 832 or 60 — to — 阴火兔年 (female Fire-Rabbit) 1214 or 833 or 61 | 
Year 1087 (MLXXXVII) was a common year starting on Friday of the Julian calendar.