The 1720s BC was a decade lasting from January 1, 1729 BC to December 31, 1720 BC.
Events and trends
- c. 1720 BC–The Hyksos invade and conquer Egypt, establishing their capital at Avaris.
- c. 1720 BC–Adasi, a native king of Assyria, seizes power.
Significant people
- Hammurabi, ruler of Babylon beginning in 1728 BC (according to the short chronology)
- Samsu-iluna, king of Babylon since 1750 BC (using the middle chronology)
- Rim-Sin I, ruler of the city-state of Larsa
- Adasi, usurper king of Assyria