The Twelfth Dynasty of ancient Egypt (Dynasty XII) is a series of rulers reigning from 1991–1802 BC (190 years), at what is often considered to be the apex of the Middle Kingdom (Dynasties XI–XIV). The dynasty periodically expanded its territory from the Nile delta and valley South beyond the second cataract and East into Canaan.
The Twelfth Dynasty was marked by relative stability and development. It has a notably well recorded history for the period. Its first pharaoh was Amenemhat I and its final was Sobekneferu.