Aśvayu (Aswayu) is a ṛṣi (rishi; sage). The vaṃśa (vamsa; genealogical or disciple-wise lineage) of Maharṣi (Maharshi; Great Sage)Aśvayu was one of the ṛṣivaṃśa(s) belonging to the pravara of Maharṣi (Maharshi; Great Sage) Aṅgirā (Angira), as mentioned in Purāṇa (Purana; Mythological Scripture). His name is mentioned in Purāṇa as one of the Aṅgirasa (Angirasa) gotra-pravartaka (clan-founder).