Parents
Apollo was the son of the king of the gods, Zeus, and the titaness Leto on the Greek island, Delos.
Sibling(s)
Apollo had a twin sister Artemis, the god of the hunt.
Wife(s)
Apollo married Cyrene, Daphne, and Coronis.
Children
Apollo had three sons and one daughter. Asclepius, god of the healing, Orpheus, Troilus, and Aristaeus.
Grandparents
Apollo's maternal grandparents were the titan Coeus, and the titaness Phoebe. His paternal grandparents were Cronus, and Rhea.
Other Relatives
Apollo's great-grandparents were Gaea and Ouranos. His uncles were Chiron, Pluto, and Neptune. Apollo's aunts were Asteria, Demeter, Hera, and Vesta. His half-brothers consisted of Ares, Dionysus, Hephaestus, Hercules, and Hermes. Apollo's half-sisters consisted of Venus, Eilithia, Eris, Hebe, and Persephone. His nephews were , Alex, Aaron, Cupid, Hermaphroditus, and Aeneas. Apollo's one niece was Harmonia, [when translated in English] means "harmony," which is a term of pitch in music, which Apollo is the god of music. Apollo's cousins were Arion, Despoena, and Triton.