Amenemhat I, also Amenemhet I and the hellenized form Ammenemes, was the first ruler of the Twelfth Dynasty, the dynasty considered to be the golden-age of the Middle Kingdom of Egypt. He ruled from 1991 BC to 1962 BC.

Amenemhat I was probably the same as the vizier named Amenemhat who led an expedition to Wadi Hammamat under his predecessor Mentuhotep IV, and possibly overthrew him from power. Scholars differ as to whether Mentuhotep IV was killed by Amenemhat I, but there is no independent evidence to suggest this and there may even have been a period of co-regency between their reigns.