Aśvātaka (Aswataka) is an ancient tribe. They fought on the side of the Kaurava, during the battle of Kurukṣetra(Kurukshetra).
This Aśvātaka tribe possibly lived in the north-western region of India, since it is known that Alexander, during his expedition in East Asia, conquered these people. Alexander found their habitation near ancient Puṣkalāvatī (Pushkalavati) or modern Peswar. This region is famous for high-quality aśva(aswa) or horses.There can be some connection between this ‘aśva’ and the derivation of the tribe-name, ‘Aśvātaka’.