Princess Abbhantripaja of Siam (Thai: พระเจ้าบรมวงศ์เธอ พระองค์เจ้าอัพภันตรีปชา; RTGS: Apphantripracha; official title: Phra Chao Boromwongse Ther Phra Ong Chao Abbhantripaja; 31 October 1889 – 18 February 1934), was a Princess of Siam (later Thailand).

She had 2 siblings; elder brother and younger sister; Princess Abbhantripaja is nicknamed "Khao" which means 'white' in Thai, due to her fair skin.

Well-educated and fluent in English, the princess cared deeply about education.

She gave her old residence to be used as the school building and moved to a smaller house, in which she later died.

Princess Abbhantripaja died on 18 February 1934, at the age of 44 from influenza and complications from kidney disease.