Atharvan (Sanskrit: अथर्वन् IAST: Atharvan, nominative singular: अथर्वा IAST: Atharvā) is a legendary Vedic sage (rishi) of Hinduism, who along with Angiras, is supposed to have authored ("heard") the Atharvaveda. He is also said to have first instituted the fire-sacrifice or yajña. Sometimes he is also reckoned among the seven seers, the Saptarishi. His clan is known as the Atharvanas. Atharvan married Shanti, daughter of Prajapati Kardama, and had a great sage Dadhichi as a son. He is referred to as a member of the Bhrigu clan.
According to the Mundaka Upanishad and other texts, he was the eldest son and (Manasaputra) born from mind of the creator deity, Brahma.