1051
| Years | 
|---|
| Millennium | 
| 2nd millennium | 
| Centuries | 
| Decades | 
| Years | 
| 1051 by topic | 
|---|
| Leaders | 
| 
 | 
| Birth and death categories | 
| Births – Deaths | 
| Establishments and disestablishments categories | 
| Establishments – Disestablishments | 
| Gregorian calendar | 1051 MLI | 
| Ab urbe condita | 1804 | 
| Armenian calendar | 500 ԹՎ Շ | 
| Assyrian calendar | 5801 | 
| Balinese saka calendar | 972–973 | 
| Bengali calendar | 457–458 | 
| Berber calendar | 2001 | 
| English Regnal year | N/A | 
| Buddhist calendar | 1595 | 
| Burmese calendar | 413 | 
| Byzantine calendar | 6559–6560 | 
| Chinese calendar | 庚寅年 (Metal Tiger) 3748 or 3541 — to — 辛卯年 (Metal Rabbit) 3749 or 3542 | 
| Coptic calendar | 767–768 | 
| Discordian calendar | 2217 | 
| Ethiopian calendar | 1043–1044 | 
| Hebrew calendar | 4811–4812 | 
| Hindu calendars | |
| - Vikram Samvat | 1107–1108 | 
| - Shaka Samvat | 972–973 | 
| - Kali Yuga | 4151–4152 | 
| Holocene calendar | 11051 | 
| Igbo calendar | 51–52 | 
| Iranian calendar | 429–430 | 
| Islamic calendar | 442–443 | 
| Japanese calendar | Eishō 6 (永承6年) | 
| Javanese calendar | 954–955 | 
| Julian calendar | 1051 MLI | 
| Korean calendar | 3384 | 
| Minguo calendar | 861 before ROC 民前861年 | 
| Nanakshahi calendar | −417 | 
| Seleucid era | 1362/1363 AG | 
| Thai solar calendar | 1593–1594 | 
| Tibetan calendar | 阳金虎年 (male Iron-Tiger) 1177 or 796 or 24 — to — 阴金兔年 (female Iron-Rabbit) 1178 or 797 or 25 | 
Year 1051 (MLI) was a common year starting on Tuesday of the Julian calendar.