Archegetes (Ancient Greek: Ἀρχηγέτης) is a Greek word that meant, effectively, "leader" or "founder". It could refer to a number of different things in classical antiquity.
Primarily, it was a title for gods and heroes that typically indicated one who was an originator or ancestor, especially of new colonies or settlements. This could be seen with gods like Hercules or Apollo, but also with the heroes of the demes of Attica, and the Thracian horseman.
Archegetes was notably an epithet of the Greek god Apollo, under which he was worshipped in several places, as at Naxos in Sicily, where Archegetes was the most popular cult of Apollo, and at Megara. The name has reference either to Apollo as the leader and protector of colonies, or as the founder of towns in general, in which case the import of the name is nearly the same as Δεὸς πατρῷος.
Archegetes was also an epithet of the Greek god Asclepius, under which he was worshipped at Tithorea in Phocis.
This article incorporates text from a publication now in the public domain: Leonhard Schmitz, Leonhard (1870). "Archegetes". In Smith, William. Dictionary of Greek and Roman Biography and Mythology. 1. p. 260.