One of the sages of great repute mentioned in Mahābharata (Mahabharata). He had three disciples, namely, Āruṇi(Aruni), Upamanyu and Veda. These three disciples were famous for their devotion to their Guru; and Āpoddhaumya had been famous through the devotion of his disciples.
[See Āruṇi, Upamanyu and Veda]