| Millennium: | 2nd millennium |
|---|---|
| Centuries: | 10th century – 11th century – 12th century |
| Decades: | 1060s 1070s 1080s – 1090s – 1100s 1110s 1120s |
| Years: | 1087 1088 1089 – 1090 – 1091 1092 1093 |
| 1090 by topic | |
| Lists of leaders | |
| State leaders | |
| Birth and death categories | |
| Births – Deaths | |
| Establishments and disestablishments categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 1090 MXC |
| Ab urbe condita | 1843 |
| Armenian calendar | 539 ԹՎ ՇԼԹ |
| Bahá'í calendar | -754 – -753 |
| Bengali calendar | 497 |
| Berber calendar | 2040 |
| Buddhist calendar | 1634 |
| Burmese calendar | 452 |
| Byzantine calendar | 6598 – 6599 |
| Chinese calendar | 己巳年十一月廿八日 (3726/3786-11-28) — to —
庚午年十二月初八日(3727/3787-12-8) |
| Coptic calendar | 806 – 807 |
| Ethiopian calendar | 1082 – 1083 |
| Hebrew calendar | 4850 – 4851 |
| Hindu calendars | |
| - Bikram Samwat | 1146 – 1147 |
| - Shaka Samvat | 1012 – 1013 |
| - Kali Yuga | 4191 – 4192 |
| Holocene calendar | 11090 |
| Iranian calendar | 468 – 469 |
| Islamic calendar | 482 – 483 |
| Japanese calendar | |
| Korean calendar | 3423 |
| Thai solar calendar | 1633 |