| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1145 by topic | |
| Leaders | |
| Political entities - State leaders - Religious leaders | |
| Birth and death categories | |
| Births – Deaths | |
| Establishments and disestablishments categories | |
| Establishments – Disestablishments | |
| Art and literature | |
| 1145 in poetry | |
| Gregorian calendar | 1145 MCXLV |
| Ab urbe condita | 1898 |
| Armenian calendar | 594 ԹՎ ՇՂԴ |
| Assyrian calendar | 5895 |
| Bengali calendar | 552 |
| Berber calendar | 2095 |
| English Regnal year | 10 Ste. 1 – 11 Ste. 1 |
| Buddhist calendar | 1689 |
| Burmese calendar | 507 |
| Byzantine calendar | 6653–6654 |
| Chinese calendar |
甲子年 (Wood Rat) 3841 or 3781 — to — 乙丑年 (Wood Ox) 3842 or 3782 |
| Coptic calendar | 861–862 |
| Discordian calendar | 2311 |
| Ethiopian calendar | 1137–1138 |
| Hebrew calendar | 4905–4906 |
| Hindu calendars | |
| - Vikram Samvat | 1201–1202 |
| - Shaka Samvat | 1066–1067 |
| - Kali Yuga | 4245–4246 |
| Holocene calendar | 11145 |
| Igbo calendar | 145–146 |
| Iranian calendar | 523–524 |
| Islamic calendar | 539–540 |
| Japanese calendar |
Ten'yō 2 / Kyūan 1 (久安元年) |
| Javanese calendar | 1051–1052 |
| Julian calendar | 1145 MCXLV |
| Korean calendar | 3478 |
| Minguo calendar | 767 before ROC 民前767年 |
| Nanakshahi calendar | −323 |
| Seleucid era | 1456/1457 AG |
| Thai solar calendar | 1687–1688 |
Year 1145 (MCXLV) was a common year starting on Monday (link will display the full calendar) of the Julian calendar.