Princess Adorn Dibyanibha or Phra Chao Boromwongse Ther Phra Ong Chao Adorn Dibyanibha (RTGS: Athon Thiphayanipha) (Thai: พระเจ้าบรมวงศ์เธอ พระองค์เจ้าอาทรทิพยนิภา, 21 April 1889 – 23 March 1958) was a Princess of Siam. She was a member of the Siamese royal family, and the daughter of Chulalongkorn, King Rama V of Siam and the great-aunt of the longest reigning Thai monarch Bhumibol Adulyadej.
Her mother was Chao Chom Manda Chum Krairoek, daughter of Lord (Phra) Mangkalaratana Rajamontri. She had a younger sister, Princess Suchitra Bharani. She died on 23 March 1958, at the age of 68.
Royal decorations
Dame of The Most Illustrious Order of the Royal House of Chakri: received 9 May 1950
Dame Cross of the Most Illustrious Order of Chula Chom Klao (First class): received 2 May 1950