In Greek mythology, Patroclus, Greek Patroklos, was Achilles’ best friend and, according to some, his lover. Due to the wide fame of Homer's work, it was used as a male first name throughout the Hellenistic and Roman periods.

Patroclus may also refer to:

People Patroclus (admiral), a Macedonian admiral in the service of Ptolemy II of Egypt, 3rd century BC Patroclus of Bourges, 5th-century Christian saint Patroclus of Troyes, 3rd-century Christian saint Patroclus, a bishop of the Ancient Diocese of Arles Patroclus, son of Heracles by Pyrippe, a daughter of Thespius Patroklos Karantinos, Greek architect

Places Patroklos, Attica, a private island near Attica, Greece, named after the 3rd c. admiral St. Patrokli, Soest, Germany Patroclus Hill, a hill on Anvers Island

Scientific Patroclus, a taxonomic synonym for the plant genus Narcissus 617 Patroclus, an asteroid

Other uses Several ships named Patroklos, a character from the Soul Calibur video game series

See also Saint Patroclus (disambiguation)