Ḫedammu, Hurrian Apše ("Snake"), is a sea-dragon from Hurrian-Hittite mythology, which caused trouble on the Syrian coast.
His Hittite counterpart was Illuyanka.
Ḫedammu is the son of the god Kumarbi and Šertapšuruḫi [de], the daughter of the personification of the sea, Kiaše.
The sea-dragon possessed an enormous appetite and nearly consumed the goddess Šauška (dIŠTAR), but was eventually defeated by her charms and she gives birth to snakes from him.