Aegina (Ancient Greek: Αἴγινα) was a figure of Greek mythology, the nymph of the island that bears her name, Aegina, lying in the Saronic Gulf between Attica and the Peloponnesos. The archaic Temple of Aphaea, the "Invisible Goddess", on the island was later subsumed by the cult of Athena. Aphaia (Ἀφαῖα) may be read as an attribute of Aegina that provides an epithet, or as a doublet of the goddess.
Though the name Aegina betokens a goat-nymph, such as was Cretan Amalthea, she was given a mainland identity as the daughter of the river-god Asopus and the nymph Metope; of their twelve or twenty daughters, many were ravished by Apollo or Zeus. Aegina bore at least two children: Menoetius by Actor, and Aeacus by Zeus, both of whom became kings.
The mortal son Menoetius was king of Opus, and was counted among the Argonauts. His son was Patroclus, Achilles' first cousin once removed through their paternal family connection to Aegina, and his intimate companion.
The son made immortal, Aeacus, was the king of Aegina, and was known to have contributed help to Poseidon and Apollo in building the walls of Troy. Through him Aegina was the great-grandmother of Achilles, who was son of Peleus, son of Aeacus.