Vajji or Vrijji was a confederacy in Ancient India . It was one of the principal mahājanapadas of Ancient India. Both the Buddhist text Anguttara Nikaya and the Jaina text Bhagavati Sutra (Saya xv Uddesa I) included Vajji in their lists of solasa (sixteen) mahājanapadas. The name of this mahājanapada was derived from one of its ruling clans, the Vṛjis. The Vajji state is indicated to have been a republic. This clan is mentioned by   Pāṇini, Chanakya and Xuanzang.