| 363 BC by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishments and disestablishments categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 363 BC |
| Ab urbe condita | 391 |
| Armenian calendar | N/A |
| Assyrian calendar | 4388 |
| Bahá'í calendar | -2206–-2205 |
| Bengali calendar | -955 |
| Berber calendar | 588 |
| English Regnal year | N/A |
| Buddhist calendar | 182 |
| Burmese calendar | -1000 |
| Byzantine calendar | 5146–5147 |
| Chinese calendar | 丁巳年 (2274/2334) — to —
戊午年(2275/2335) |
| Coptic calendar | -646–-645 |
| Ethiopian calendar | -370–-369 |
| Hebrew calendar | 3398–3399 |
| Hindu calendars | |
| - Vikram Samvat | -306–-305 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 2739–2740 |
| Holocene calendar | 9638 |
| Iranian calendar | 984 BP – 983 BP |
| Islamic calendar | 1014 BH – 1013 BH |
| Japanese calendar | |
| Korean calendar | 1971 |
| Minguo calendar | 2274 before ROC 民前2274年 |
| Thai solar calendar | 181 |
Year 363 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Aventinensis and Mamercinus (or, less frequently, year 391 Ab urbe condita). The denomination 363 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.