Celtine (Κελτίνη) was the daughter of the Celtic King Bretannus. Celtine is known for having been one of the consorts of Herakles. Her story, recorded by Parthenius of Nicaea, is as follows.
When Herakles was driving the cattle of Geryon to Greece, he stopped at Bretannus' house. Celtine fell in love with her father's guest and tricked him into consorting with her: she hid away the kine and told Herkcles that in order to get the herd back, he had to content her. Herakles, both anxious to bring the cattle safe to King Eurystheus and overcome by Celtine's beauty, consented. From their union was born a son Celtus, eponym of the Celts