| Centuries: | 4th century BC - 3rd century BC - 2nd century BC |
| Decades: | 320s BC 310s BC 300s BC - 290s BC - 280s BC 270s BC 260s BC |
| Years: | 302 BC 301 BC 300 BC - 299 BC - 298 BC 297 BC 296 BC |
| 299 BC by topic | |
| Politics | |
| State leaders - Sovereign states | |
| Birth and death categories | |
| Births - Deaths | |
| Establishments and disestablishments categories | |
| Establishments - Disestablishments | |
| Gregorian calendar | 299 BC |
| Ab urbe condita | 455 |
| Armenian calendar | N/A |
| Bahá'í calendar | -2142 – -2141 |
| Berber calendar | 652 |
| Buddhist calendar | 246 |
| Burmese calendar | -936 |
| Chinese calendar | 2338/2398 ([[Sexagenary cycle|]]年) — to —
2339/2399([[Sexagenary cycle|]]年) |
| Coptic calendar | -582 – -581 |
| Ethiopian calendar | -306 – -305 |
| Hebrew calendar | 3462 – 3463 |
| Hindu calendars | |
| - Vikram Samvat | -243 – -242 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 2803 – 2804 |
| Holocene calendar | 9702 |
| Iranian calendar | 920 BP – 919 BP |
| Islamic calendar | 948 BH – 947 BH |
| Japanese calendar | |
| Korean calendar | 2035 |
| Thai solar calendar | 245 |