Phya Anuman Rajadhon (Thai: พระยาอนุมานราชธน; RTGS: Phraya Anuman Ratchathon, also spelled Phaya Anuman Rajadhon or Phrayā Anuman Rajadhon; December 14, 1888 – July 12, 1969), was one of modern Thailand's most remarkable scholars. He was a self-trained linguist, anthropologist and ethnographer who became an authority on the culture of Thailand. His name was Yong Sathiankoset (Thai: ยง เสฐียรโกเศศ); Phraya Anuman Rajadhon was his noble title.