| Centuries: | 5th century BC - 4th century BC - 3rd century BC |
| Decades: | 330s BC 320s BC 310s BC - 300s BC - 290s BC 280s BC 270s BC |
| Years: | 305 BC 304 BC 303 BC - 302 BC - 301 BC 300 BC 299 BC |
| 302 BC by topic | |
| Politics | |
| State leaders - Sovereign states | |
| Birth and death categories | |
| Births - Deaths | |
| Establishments and disestablishments categories | |
| Establishments - Disestablishments | |
| Gregorian calendar | 302 BC |
| Ab urbe condita | 452 |
| Armenian calendar | N/A |
| Bahá'í calendar | -2145 – -2144 |
| Berber calendar | 649 |
| Buddhist calendar | 243 |
| Burmese calendar | -939 |
| Chinese calendar | 2335/2395 ([[Sexagenary cycle|]]年) — to —
2336/2396([[Sexagenary cycle|]]年) |
| Coptic calendar | -585 – -584 |
| Ethiopian calendar | -309 – -308 |
| Hebrew calendar | 3459 – 3460 |
| Hindu calendars | |
| - Vikram Samvat | -246 – -245 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 2800 – 2801 |
| Holocene calendar | 9699 |
| Iranian calendar | 923 BP – 922 BP |
| Islamic calendar | 951 BH – 950 BH |
| Japanese calendar | |
| Korean calendar | 2032 |
| Thai solar calendar | 242 |