1265
| Millennium: | 2nd millennium |
|---|---|
| Centuries: | 12th century – 13th century – 14th century |
| Decades: | 1230s 1240s 1250s – 1260s – 1270s 1280s 1290s |
| Years: | 1262 1263 1264 – 1265 – 1266 1267 1268 |
| Gregorian calendar | 1265 MCCLXV |
| Ab urbe condita | 2018 |
| Armenian calendar | 714 ԹՎ ՉԺԴ |
| Assyrian calendar | 6015 |
| Balinese saka calendar | 1186–1187 |
| Bengali calendar | 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) 3961 or 3901 — to — 乙丑年 (Wood Ox) 3962 or 3902 |
| 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 |
1265 (MCCLXV) was a common year starting on Thursday of the Julian calendar, the 1265th year of the Common Era (CE) and Anno Domini (AD) designations, the 265th year of the 2nd millennium, the 65th year of the 13th century, and the 6th year of the 1260s decade. As of the start of 1265, the Gregorian calendar was 7 days ahead of the Julian calendar, which was the dominant calendar of the time.