The vaṃśa (vamsa; genealogical or disciple-wise order) of Maharṣi (Maharshi; Great Sage) Ardhapaṇya (Ardhapanya) is one of the ṛṣivaṃśa(s) belonging to the pravara (clan) of Maharṣi Atri. Ardhapaṇya was one of the clan-founders of Atrivaṃśa.