Princess Chudharatana Rajakumari or Phra Chao Boromwongse Ther Phra Ong Chao Chudharatana Rajakumari (RTGS: Chutharat Ratchakumari) () (17 December 187231 December 1930) 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) Morakot Phenkul, daughter of Lord (Phraya) Mahindrasakdi Dhamrong and Dame (Thanpuying) Hunn Phenkul. She had a younger brother, Prince Benbadhanabongse, Prince of Phichai. She died on 31 December 1930, at the age of 58.
Royal Decoration Dame Cross of the Most Illustrious Order of Chula Chom Klao (First class): received 26 November 1926
Ancestry +Ancestor of Princess Chudharatana Rajakumari Princess Chudharatana Rajakumari Father:Chulalongkorn, King Rama V of Siam Paternal Grandfather:Mongkut, King Rama IV of Siam Paternal Great-grandfather:Buddha Loetla Nabhalai, King Rama II of Siam Paternal Great-grandmother:Queen Sri Suriyendra Paternal Grandmother:Queen Debsirindra Paternal Great-grandfather:Prince Sirivongse, the Prince Matayabidaksa Paternal Great-grandmother:Mom Noi Sirivongs na Ayudhya Mother:Chao Chom Manda Morakot Phenkul Maternal Grandfather:Phraya Mahindrasakdi Dhamrong Maternal Great-grandfather:Lord (Khun) Chinda Pichitra Maternal Great-grandmother:Mon Phenkul Maternal Grandmother:Thanpuying Hun Phenkul Maternal Great-grandfather:Phraya Nakornindra Ramanya Maternal Great-grandmother:unknown