Sayanacharya, or Sayana Madhava (died 1387), was a celebrated Sanskrit scholar and commentator who served as a minister in the Vijayanagara Empire. He is most famous for his monumental commentaries on the Vedas. His work सर्वदर्शनसंग्रह (Sarvadarshanasangraha) is a classic of Indian philosophy, providing a comprehensive summary of sixteen different philosophical systems prevalent in his era.