Udyotakara (or Uddyotakara) (c. 6th century CE) was a philosopher of the Nyaya school of Indian philosophy. Subandhu’s Vāsavadattā mentioned him as the rescuer of the Nyaya. He was a brahmin of Bharadvaja gotra and he belonged to the Pashupata sect. His philosophical treatise, the Nyāyavārttika was written to defend Vatsyayana's Nyāyavāṣya against the criticisms made by Dignaga[1].
Very little is known about the life of Udyotakara. The only place mentioned in his text is Shrughna[2], which is identified with the present-day Sugh in Yamuna Nagar district in Haryana. His Nyāyavārttika is divided in to five chapters.