In Greek mythology, Aesepus (Αἴσηπος) was the son of the naiad Abarbarea and Bucolion. His twin brother was Pedasus; the pair appears briefly in the Iliad, Book VI. Both men fought in the Trojan War and were killed by Euryalus, the son of Mecisteus.
Another Aesepus is a son of Oceanus and Tethys, the divine personification of the river and nearby town today known as Gönen in Turkey. There is a problem herein because this god is the grandfather of the other Aesepus through his daughter Abarbarea.