Ūrjayoni(Urjayoni) is one of the Brahmavādī (Brahmavadi; One who discusses the Grace of Brahman or the Absolute Divinity) sons of Maharṣi (Maharshi; Great Sage)Viśvāmitra (Viswamitra), mentioned in Anuśāsanaparva (Anusasanaparva) of Mahābhārata (Mahabharata).