| Millennium: | 1st millennium |
|---|---|
| Centuries: | 2nd century – 3rd century – 4th century |
| Decades: | 230s 240s 250s – 260s – 270s 280s 290s |
| Years: | 262 263 264 – 265 – 266 267 268 |
| 265 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 265 CCLXV |
| Ab urbe condita | 1018 |
| Armenian calendar | N/A |
| Assyrian calendar | 5015 |
| Bahá'í calendar | -1579–-1578 |
| Bengali calendar | -328 |
| Berber calendar | 1215 |
| English Regnal year | N/A |
| Buddhist calendar | 809 |
| Burmese calendar | -373 |
| Byzantine calendar | 5773–5774 |
| Chinese calendar | 甲申年十一月廿七日 (2901/2961-11-27) — to —
乙酉年閏十一月初七日(2902/2962-intercalary 11-7) |
| Coptic calendar | -19–-18 |
| Ethiopian calendar | 257–258 |
| Hebrew calendar | 4025–4026 |
| Hindu calendars | |
| - Vikram Samvat | 321–322 |
| - Shaka Samvat | 187–188 |
| - Kali Yuga | 3366–3367 |
| Holocene calendar | 10265 |
| Iranian calendar | 357 BP – 356 BP |
| Islamic calendar | 368 BH – 367 BH |
| Japanese calendar | |
| Korean calendar | 2598 |
| Minguo calendar | 1647 before ROC 民前1647年 |
| Thai solar calendar | 808 |
Year 265 (CCLXV) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Valerianus and Lucillus (or, less frequently, year 1018 Ab urbe condita). The denomination 265 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.