| Millennium: | 1st millennium BC |
|---|---|
| Centuries: | 4th century BC – 3rd century BC – 2nd century BC |
| Decades: | 290s BC 280s BC 270s BC – 260s BC – 250s BC 240s BC 230s BC |
| Years: | 264 BC 263 BC 262 BC – 261 BC – 260 BC 259 BC 258 BC |
| 261 BC by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishments and disestablishments categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 261 BC |
| Ab urbe condita | 493 |
| Armenian calendar | N/A |
| Bahá'í calendar | -2104 – -2103 |
| Bengali calendar | -853 |
| Berber calendar | 690 |
| Buddhist calendar | 284 |
| Burmese calendar | -898 |
| Byzantine calendar | 5248 – 5249 |
| Chinese calendar | [[Sexagenary cycle|]]年 (2376/2436) — to —
子年(2377/2437) |
| Coptic calendar | -544 – -543 |
| Ethiopian calendar | -268 – -267 |
| Hebrew calendar | 3500 – 3501 |
| Hindu calendars | |
| - Bikram Samwat | -204 – -203 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 2841 – 2842 |
| Holocene calendar | 9740 |
| Iranian calendar | 882 BP – 881 BP |
| Islamic calendar | 909 BH – 908 BH |
| Japanese calendar | |
| Korean calendar | 2073 |
| Thai solar calendar | 283 |