In Greek mythology, Psamathe (Ancient Greek: Ψαμάθη) is a Nereid, one of the fifty daughters of the sea god Nereus and the Oceanid Doris. By Aeacus, the king of Aegina, she is the mother of a son, Phocus. When Phocus is killed by his half-brothers Peleus and Telamon, Psamathe sends a giant wolf at Peleus's herd.