The Tsimihety are a Malagasy ethnic group who are found in the north-central region of Madagascar. Their name means "those who never cut their hair", a behavior likely linked to their independence from Sakalava kingdom, located to their west, where cutting hair at the time of mourning was expected. They are found in mountainous part of the island. They are one of the largest Malagasy ethnic groups and their population estimates range between 700,000 and over 1.2 million. This estimation places them as the fourth-largest ethnicity in Madagascar.