| Millennium: | 1st millennium |
|---|---|
| Centuries: | 2nd century – 3rd century – 4th century |
| Decades: | 240s 250s 260s – 270s – 280s 290s 300s |
| Years: | 270 271 272 – 273 – 274 275 276 |
| 273 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 273 CCLXXIII |
| Ab urbe condita | 1026 |
| Armenian calendar | N/A |
| Assyrian calendar | 5023 |
| Bahá'í calendar | -1571–-1570 |
| Bengali calendar | -320 |
| Berber calendar | 1223 |
| English Regnal year | N/A |
| Buddhist calendar | 817 |
| Burmese calendar | -365 |
| Byzantine calendar | 5781–5782 |
| Chinese calendar | 壬辰年十一月廿五日 (2909/2969-11-25) — to —
癸巳年十二月初六日(2910/2970-12-6) |
| Coptic calendar | -11–-10 |
| Ethiopian calendar | 265–266 |
| Hebrew calendar | 4033–4034 |
| Hindu calendars | |
| - Vikram Samvat | 329–330 |
| - Shaka Samvat | 195–196 |
| - Kali Yuga | 3374–3375 |
| Holocene calendar | 10273 |
| Iranian calendar | 349 BP – 348 BP |
| Islamic calendar | 360 BH – 359 BH |
| Japanese calendar | |
| Korean calendar | 2606 |
| Minguo calendar | 1639 before ROC 民前1639年 |
| Thai solar calendar | 816 |
Year 273 (CCLXXIII) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Tacitus and Placidianus (or, less frequently, year 1026 Ab urbe condita). The denomination 273 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.