Rajarshi or Rajarishi (from Sanskrit rajan "king" + rishi) is in Hinduism and Hindu mythology, a royal saint and rishi.
They still belong to the kshatriya caste, and remain below most rishis, maharishis and brahmarishis in their level of spiritual knowledge, but are superior to most kings.
Janaka, the king of and Mithila father of Sita, and Dasaratha, king of Ayodhya and father of Rama were both Rajarishis, spiritually self-realized and advanced in their knowledge of religion.