Zaius

Zaius could refer to:
 * Zaius (I), Also known as Doctor Zaius; an orangutan character from the Planet of the Apes film series.
 * Zaius (II), Also known as Counselor Zaius; an orangutan character from the Planet of the Apes television series.
 * Zaius (III), Also known as Doctor Zaius; an orangutan character from the Return to the Planet of the Apes animated series.
 * Zaius (IV), A chimpanzee character from the 2001 remake of Planet of the Apes.