| Millennium: | 1st millennium |
|---|---|
| Centuries: | 3rd century – 4th century – 5th century |
| Decades: | 280s 290s 300s – 310s – 320s 330s 340s |
| Years: | 308 309 310 – 311 – 312 313 314 |
| 311 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 311 CCCXI |
| Ab urbe condita | 1064 |
| Armenian calendar | N/A |
| Assyrian calendar | 5061 |
| Bahá'í calendar | -1533–-1532 |
| Bengali calendar | -282 |
| Berber calendar | 1261 |
| English Regnal year | N/A |
| Buddhist calendar | 855 |
| Burmese calendar | -327 |
| Byzantine calendar | 5819–5820 |
| Chinese calendar | 庚午年十一月廿五日 (2947/3007-11-25) — to —
辛未年十二月初五日(2948/3008-12-5) |
| Coptic calendar | 27–28 |
| Ethiopian calendar | 303–304 |
| Hebrew calendar | 4071–4072 |
| Hindu calendars | |
| - Vikram Samvat | 367–368 |
| - Shaka Samvat | 233–234 |
| - Kali Yuga | 3412–3413 |
| Holocene calendar | 10311 |
| Iranian calendar | 311 BP – 310 BP |
| Islamic calendar | 321 BH – 320 BH |
| Japanese calendar | |
| Julian calendar | 311 CCCXI |
| Korean calendar | 2644 |
| Minguo calendar | 1601 before ROC 民前1601年 |
| Thai solar calendar | 854 |
| Wikimedia Commons has media related to: 311 |
Year 311 (CCCXI) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Valerius and Maximinus (or, less frequently, year 1064 Ab urbe condita). The denomination 311 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.
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