| Centuries: | 11th century - 12th century - 13th century |
| Decades: | 1090s 1100s 1110s - 1120s - 1130s 1140s 1150s |
| Years: | 1118 1119 1120 - 1121 - 1122 1123 1124 |
| 1121 by topic | |
| Politics | |
| State leaders - Sovereign states | |
| Birth and death categories | |
| Births - Deaths | |
| Establishments and disestablishments categories | |
| Establishments - Disestablishments | |
| Art and literature | |
| 1121 in poetry | |
| Gregorian calendar | 1121 MCXXI |
| Ab urbe condita | 1874 |
| Armenian calendar | 570 ԹՎ ՇՀ |
| Bahá'í calendar | -723 – -722 |
| Berber calendar | 2071 |
| Buddhist calendar | 1665 |
| Burmese calendar | 483 |
| Byzantine calendar | 6629 – 6630 |
| Chinese calendar | 庚子年十二月十一日 (3757/3817-12-11) — to —
辛丑年十一月二十日(3758/3818-11-20) |
| Coptic calendar | 837 – 838 |
| Ethiopian calendar | 1113 – 1114 |
| Hebrew calendar | 4881 – 4882 |
| Hindu calendars | |
| - Vikram Samvat | 1176 – 1177 |
| - Shaka Samvat | 1043 – 1044 |
| - Kali Yuga | 4222 – 4223 |
| Holocene calendar | 11121 |
| Iranian calendar | 499 – 500 |
| Islamic calendar | 514 – 515 |
| Japanese calendar | |
| Korean calendar | 3454 |
| Thai solar calendar | 1664 |
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