| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1121 by topic |
|---|
| Leaders |
| 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 |
| Assyrian calendar | 5871 |
| Balinese saka calendar | 1042–1043 |
| Bengali calendar | 528 |
| Berber calendar | 2071 |
| English Regnal year | 21 Hen. 1 – 22 Hen. 1 |
| Buddhist calendar | 1665 |
| Burmese calendar | 483 |
| Byzantine calendar | 6629–6630 |
| Chinese calendar | 庚子年 (Metal Rat) 3818 or 3611 — to — 辛丑年 (Metal Ox) 3819 or 3612 |
| Coptic calendar | 837–838 |
| Discordian calendar | 2287 |
| Ethiopian calendar | 1113–1114 |
| Hebrew calendar | 4881–4882 |
| Hindu calendars | |
| - Vikram Samvat | 1177–1178 |
| - Shaka Samvat | 1042–1043 |
| - Kali Yuga | 4221–4222 |
| Holocene calendar | 11121 |
| Igbo calendar | 121–122 |
| Iranian calendar | 499–500 |
| Islamic calendar | 514–515 |
| Japanese calendar | Hōan 2 (保安２年) |
| Javanese calendar | 1026–1027 |
| Julian calendar | 1121 MCXXI |
| Korean calendar | 3454 |
| Minguo calendar | 791 before ROC 民前791年 |
| Nanakshahi calendar | −347 |
| Seleucid era | 1432/1433 AG |
| Thai solar calendar | 1663–1664 |
| Tibetan calendar | 阳金鼠年 (male Iron-Rat) 1247 or 866 or 94 — to — 阴金牛年 (female Iron-Ox) 1248 or 867 or 95 |
Year 1121 (MCXXI) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar.