Princess Orabindu Benyabhak or Phra Chao Boromwongse Ther Phra Ong Chao Orabindu Benyabhak (RTGS: Oraphin Phenphak) (Thai: พระเจ้าบรมวงศ์เธอ พระองค์เจ้าอรพินทุ์เพ็ญภาค) (27 April 1873 – 26 January 1935), was a Princess of Siam (later Thailand. Princess Benyabhak was a member of Siamese Royal Family. She was a daughter of Chulalongkorn, King Rama V of Siam. Her mother was , daughter of (son of , who originated the Royal House of Isrankura.