| 380 BC by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishments and disestablishments categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 380 BC |
| Ab urbe condita | 374 |
| Armenian calendar | N/A |
| Assyrian calendar | 4371 |
| Bahá'í calendar | -2223–-2222 |
| Bengali calendar | -972 |
| Berber calendar | 571 |
| English Regnal year | N/A |
| Buddhist calendar | 165 |
| Burmese calendar | -1017 |
| Byzantine calendar | 5129–5130 |
| Chinese calendar | 庚子年 (2257/2317) — to —
辛丑年(2258/2318) |
| Coptic calendar | -663–-662 |
| Ethiopian calendar | -387–-386 |
| Hebrew calendar | 3381–3382 |
| Hindu calendars | |
| - Vikram Samvat | -323–-322 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 2722–2723 |
| Holocene calendar | 9621 |
| Iranian calendar | 1001 BP – 1000 BP |
| Islamic calendar | 1032 BH – 1031 BH |
| Japanese calendar | |
| Julian calendar | |
| Korean calendar | 1954 |
| Minguo calendar | 2291 before ROC 民前2291年 |
| Thai solar calendar | 164 |
| Wikimedia Commons has media related to: 380 BC |
Year 380 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Tribunate of Poplicola, Poplicola, Maluginensis, Lanatus, Peticus, Mamercinus, Fidenas, Crassus and Mugillanus (or, less frequently, year 374 Ab urbe condita). The denomination 380 BC 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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