Odius

Odius may refer to:
 * , character in Trojan War
 * Odius (crustacean), a genus of amphipods in the family Odiidae
 * Odius, a genus of harvestmen in the family Phalangiidae, synonym of Odiellus
 * Odius, a genus of true bugs in the family Pentatomidae, synonym of Caystrus