List of political entities in the 3rd century BC
This is a list of sovereign states or polities that existed in the 3rd century BC.
Political entities

| Sovereign state |
|---|
| Achaea – Achaean League (from 280 BC) |
| Adena |
| Aetolia – Aetolian League |
| Albania – Kingdom of Albania |
| Ardiaean Kingdom – Ardiaean Illyric Kingdom (from 260 BC) |
| Atropatene – Kingdom of Atropatene |
| Bithynia (from 297 BC) |
| Bosporus – Bosporan Kingdom |
| Carthage |
| Chavín – Chavín Culture (to 250 BC) |
| Chera Kingdom |
| Chola – Chola Empire |
| Chorrera (to 300 BC) |
| Chu – State of Chu (to 223 BC) |
| Dardanian Kingdom – Dardanian Illyric Kingdom |
| Dongye – Korean chiefdom |
| Eastern Zhou – Kingdom of Eastern Zhou (from 256 BC – 249 BC) |
| Ethiopia – Ethiopian Empire |
| Gojoseon – Ancient Korean Kingdom |
| Greco-Bactrian Kingdom (from 256 BC) |
| Han – Han dynasty (from 206 BC) |
| Han – State of Han (to 230 BC) |
| Iberia |
| Kush – Kingdom of Kush |
| Jin State – Jin state |
| Lu – State of Lu (to 256 BC) |
| Lycaonia |
| Macedonia |
| Maurya Empire |
| Maya |
| Minyue (from 224 BC) |
| Numidia – Kingdom of Numidia (from 202 BC) |
| Paracas |
| Parthian Empire (from 247 BC) |
| Pontus –- Kingdom of Pontus (from 291 BC) |
| Ptolemaic Empire |
| Qi – State of Qi (to 241 BC) |
| Qin – State of Qin |
| Qin – Qin dynasty (from 221 BC – 206 BC) |
| Roman Republic |
| Sātavāhana Empire (from 230 BC) |
| Scythia |
| Seleucid Empire |
| Sparta |
| State of the Scordisci (from c.278 BC) |
| Văn Lang (to 258 BC) |
| Wei – State of Wei (to 225 BC) |
| Yan – State of Yan (to 222 BC) |
| Zhoa – State of Zhoa (to 222 BC) |
| Zhou – Zhou dynasty (to 256 BC) |
See also
- List of Bronze Age states
- List of Iron Age states
- List of Classical Age states
- List of states during Late Antiquity
- List of states during the Middle Ages