Princess Dibyalangkarn or Phra Chao Boromwongse Ther Phra Ong Chao Dibyalangkarn (RTGS: Thipphayalangkan) () (17 January 1891 – 4 June 1932), was a Princess of Siam (later Thailand). She was a member of the Siamese royal family. She is a daughter of Chulalongkorn, King Rama V of Siam.
Her mother was The Noble Consort (Chao Chom Manda) Sae Rojanadis, daughter of Phraya Abbhantrikamas and Bang Rojanadis. She had 2 full siblings; an elder brother and an elder sister;
Princess Dibyalangkarn died on 4 June 1932, at the age of only 41.