For Teucer, son of King Telamon of Salamis, see Teucer.

In Greek mythology, King Teucer, , (also Teucrus) was said to have been the son of the river Scamander and the nymph Idaea. Before the arrival of Dardanus, the land that would eventually be called Dardania (and later still the Troad) was known as Teucria and the inhabitants as Teucrians, after Teucer.