Therian

Therian may refer to:


 * In taxonomy, a member of the mammalian subclass Theria, consisting of marsupial and placental mammals
 * Therianthropy, the mythological ability or affliction of individuals to metamorphose into animals or hybrids by means of shapeshifting
 * A member of the contemporary subculture of therianthropy, a subcommunity of otherkin, which is based on a psychological identification with animals