Sañjaya Belatthiputra (Pali: Sañjaya Belaṭṭhiputta; Sanskrit: Sañjaya Vairatiputra; literally, "Sañjaya of the Belattha clan"), was an Indian ascetic philosopher who lived around the 7th-6th century BC in the region of Magadha. He was contemporaneous with Mahavira, Makkhali Gosala, Ajita Kesakambali and the Buddha, and was a proponent of the ajñana school of thought.