In Greek mythology, Leto was the Titan mother of Apollo and Artemis.
Leto was the daughter of the Titans Coeus and Phoebe. Zeus became the father of her twins, Apollo and Artemis. According to myth, Hera's jealousy made Leto's search for a place to give birth difficult, because other lands feared welcoming a woman pursued by Zeus's wife.
The island of Delos eventually offered refuge. Leto gave birth to Artemis first and then Apollo, although versions of the story vary in details. Delos later became especially sacred to Apollo, while nearby Mount Cynthus was associated with the births.
Leto is sometimes confused with Rhea, the mother of Zeus, Hera, Poseidon, Demeter, Hestia, and Hades. She is also distinct from Metis, Zeus's first wife and the mother associated with Athena. Leto's best-known myth explains the divine origins of the two youthful archers.