Caresus or Karesos (Greek, Ancient (to 1453);: Κάρησος) was a river of the ancient Troad, mentioned by Homer in the Iliad. The river gave name to a mountainous district called Caresene through which it flowed. It flows into the Aesepus River. The Caresus had a considerable valley (αὐλῶν), but less than that of the Aesepus. The Caresus springs between Palaescepsis and Achaeum, which is opposite to the island of Tenedos. There was a town of the same name that ruined before Strabo's time.
Its identification is unknown.