Princess Myat Phaya Gyi was a Burmese royal princess and most senior member of the Royal House of Konbaung. She was the eldest daughter of the last ruling king of Burma, King Thibaw, and his queen Supayalat.

King Thibaw, also Thebaw or Theebaw, was the last king of the Konbaung dynasty of Burma (Myanmar) and also the last Burmese monarch in the country's history. His reign ended when the armed forces of the Burmese Empire were defeated by the forces of the British Empire in the Third Anglo-Burmese War, on 29 November 1885, prior to its official annexation on 1 January 1886.