| Millennium: | 1st millennium BC |
|---|---|
| Centuries: | 4th century BC – 3rd century BC – 2nd century BC |
| Decades: | 300s BC 290s BC 280s BC – 270s BC – 260s BC 250s BC 240s BC |
| Years: | 276 BC 275 BC 274 BC – 273 BC – 272 BC 271 BC 270 BC |
| 273 BC by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishments and disestablishments categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 273 BC |
| Ab urbe condita | 481 |
| Armenian calendar | N/A |
| Bahá'í calendar | -2116 – -2115 |
| Bengali calendar | -865 |
| Berber calendar | 678 |
| Buddhist calendar | 272 |
| Burmese calendar | -910 |
| Byzantine calendar | 5236 – 5237 |
| Chinese calendar | [[Sexagenary cycle|]]年 (2364/2424) — to —
子年(2365/2425) |
| Coptic calendar | -556 – -555 |
| Ethiopian calendar | -280 – -279 |
| Hebrew calendar | 3488 – 3489 |
| Hindu calendars | |
| - Bikram Samwat | -216 – -215 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 2829 – 2830 |
| Holocene calendar | 9728 |
| Iranian calendar | 894 BP – 893 BP |
| Islamic calendar | 921 BH – 920 BH |
| Japanese calendar | |
| Korean calendar | 2061 |
| Thai solar calendar | 271 |