1265
| Years | 
|---|
| Millennium | 
| 2nd millennium | 
| Centuries | 
| Decades | 
| Years | 
| 1265 by topic | 
|---|
| Leaders | 
| 
 | 
| Birth and death categories | 
| Births – Deaths | 
| Establishments and disestablishments categories | 
| Establishments – Disestablishments | 
| Art and literature | 
| 1265 in poetry | 
| Gregorian calendar | 1265 MCCLXV | 
| Ab urbe condita | 2018 | 
| Armenian calendar | 714 ԹՎ ՉԺԴ | 
| Assyrian calendar | 6015 | 
| Balinese saka calendar | 1186–1187 | 
| Bengali calendar | 671–672 | 
| Berber calendar | 2215 | 
| English Regnal year | 49 Hen. 3 – 50 Hen. 3 | 
| Buddhist calendar | 1809 | 
| Burmese calendar | 627 | 
| Byzantine calendar | 6773–6774 | 
| Chinese calendar | 甲子年 (Wood Rat) 3962 or 3755 — to — 乙丑年 (Wood Ox) 3963 or 3756 | 
| Coptic calendar | 981–982 | 
| Discordian calendar | 2431 | 
| Ethiopian calendar | 1257–1258 | 
| Hebrew calendar | 5025–5026 | 
| Hindu calendars | |
| - Vikram Samvat | 1321–1322 | 
| - Shaka Samvat | 1186–1187 | 
| - Kali Yuga | 4365–4366 | 
| Holocene calendar | 11265 | 
| Igbo calendar | 265–266 | 
| Iranian calendar | 643–644 | 
| Islamic calendar | 663–664 | 
| Japanese calendar | Bun'ei 2 (文永2年) | 
| Javanese calendar | 1175–1176 | 
| Julian calendar | 1265 MCCLXV | 
| Korean calendar | 3598 | 
| Minguo calendar | 647 before ROC 民前647年 | 
| Nanakshahi calendar | −203 | 
| Thai solar calendar | 1807–1808 | 
| Tibetan calendar | 阳木鼠年 (male Wood-Rat) 1391 or 1010 or 238 — to — 阴木牛年 (female Wood-Ox) 1392 or 1011 or 239 | 
Year 1265 (MCCLXV) was a common year starting on Thursday of the Julian calendar.