冕狐猴属（学名 Propithecus） 是大狐猴科的一属，与其他狐猴一样，它们也只产于马达加斯加。

Sifakas (singular "sifaka"; /ʃɪˈfɑːk/; Malagasy pronunciation: [ˈsifakə̥]) are a genus (Propithecus) of lemur from the family Indriidae within the order Primates. The name of their family is an onomatopoeia of their characteristic "shi-fak" alarm call. Like all lemurs, they are found only on the island of Madagascar. All species of sifakas are threatened, ranging from vulnerable to critically endangered.