| Millennium: | 2nd millennium |
|---|---|
| Centuries: | 10th century – 11th century – 12th century |
| Decades: | 1060s 1070s 1080s – 1090s – 1100s 1110s 1120s |
| Years: | 1088 1089 1090 – 1091 – 1092 1093 1094 |
| 1091 by topic | |
| Lists of leaders | |
| State leaders | |
| Birth and death categories | |
| Births – Deaths | |
| Establishments and disestablishments categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 1091 MXCI |
| Ab urbe condita | 1844 |
| Armenian calendar | 540 ԹՎ ՇԽ |
| Bahá'í calendar | -753 – -752 |
| Bengali calendar | 498 |
| Berber calendar | 2041 |
| Buddhist calendar | 1635 |
| Burmese calendar | 453 |
| Byzantine calendar | 6599 – 6600 |
| Chinese calendar | 庚午年十二月初九日 (3727/3787-12-9) — to —
辛未年十一月十九日(3728/3788-11-19) |
| Coptic calendar | 807 – 808 |
| Ethiopian calendar | 1083 – 1084 |
| Hebrew calendar | 4851 – 4852 |
| Hindu calendars | |
| - Bikram Samwat | 1147 – 1148 |
| - Shaka Samvat | 1013 – 1014 |
| - Kali Yuga | 4192 – 4193 |
| Holocene calendar | 11091 |
| Iranian calendar | 469 – 470 |
| Islamic calendar | 483 – 484 |
| Japanese calendar | |
| Korean calendar | 3424 |
| Thai solar calendar | 1634 |