1. Sumerians (c. 4000-2300 BC)
2. Akkadians (c. 2300-2100 BC)
3. Gutians (c. 2100-2000 BC)
4. Ur III (c. 2000-1900 BC)
5. Amorites (c. 1900-1595 BC)
6. Hittites (c. 1595-1335 BC)
7. Kassites (c. 1335-1155 BC)
8. Elamites (c. 1155-1120 BC)
9. Assyrians (c. 1120-609 BC)
10. Babylonians (c. 609-539 BC)
11. Achaemenids (c. 539-331 BC)
12. Seleucids (c. 331-141 BC)
13. Parthians (c. 141 BC-224 AD)
14. Sassanids (224-651 AD)
15. Arabs (651-750 AD)
16. Abbasids (750-1258 AD)
17. Seljuk Turks (1055-1194 AD)
18. Mongols (1206-1258 AD)
19. Ilkhanates (1258-1353 AD)
20. Jalayirids (1336-1432 AD)
21. Timurids (1370-1506 AD)
22. Safavids (1501-1736 AD)
23. Ottomans (1534-1922 AD)
24. British (1920-1932 AD)
25. Iraqis (1932-present)