In Greek mythology, Antilochus /ænˈtɪləkəs/ (Greek: Ἀντίλοχος, Antílokhos) was the son of Nestor, king of Pylos, and was one of the Acheans in the Trojan War.

One of the suitors of Helen of Troy, he accompanied his father and his brother Thrasymedes to the Trojan War. He was distinguished for his beauty, swiftness of foot, and skill as a charioteer. Though the youngest among the Greek princes, he commanded the Pylians in the war and performed many deeds of valour. He was a favorite of the gods and a friend of Achilles, to whom he was commissioned to announce the death of Patroclus.