Princess Bhaktra Bimalabarna (Thai: พักตร์พิมลพรรณ ; RTGS: Phakphimonphan ; 25 October 1854 - 18 October 1909) was a Princess of Siam (later Thailand). She was a member of Siamese royal family and is a daughter of King Mongkut and Consort Phae Dharmasaroja.
Her mother was Chao Chom Manda Pae Thamsaroj (is a daughter of Ao Thamsaroj and Si Thamsaroj) She was given the full name of Phra Chao Borom Wong Ther Phra Ong Chao Bhaktra Bimalabarna (Thai: พระเจ้าบรมวงศ์เธอ พระองค์เจ้าพักตร์พิมลพรรณ). She had 3 siblings[dubious – discuss] 1 elder sister and 2 younger brother and 1 younger sister: