In Greek mythology, Prothous (Ancient Greek: Πρόθοος Prothoös) may refer to: * Prothous, an Arcadian prince as one of the 50 sons of the impious King Lycaon either by the naiad Cyllene, Nonacris or by unknown woman. He and his brothers were the most nefarious and carefree of all people. To test them, Zeus visited them in the form of a peasant. These brothers mixed the entrails of a child into the god's meal, whereupon the enraged Zeus threw the meal over the table. Aegaeon was killed, along with his brothers and their father, by a lightning bolt of the god. * Prothous, son of Thestius and brother of Althaea. He was one of the Calydonian Boar Hunters. * Prothous, son of the Aetolian Agrius, killed by Diomedes. * Prothous of Argos, a warrior in the army of the Seven against Thebes. He ca