| Chudharatana Rajakumari | |
| Full Name: | Chudharatana Rajakumari |
| House: | Chakri dynasty |
| Mother: | Chao Chom Manda Morakot Phenkul |
| Birth Date: | 17 December 1872 |
| Birth Place: | Grand Palace Bangkok, Siam |
| Death Place: | Bangkok, Siam |
Princess Chudharatana Rajakumari or Phra Chao Boromwongse Ther Phra Ong Chao Chudharatana Rajakumari (RTGS: Chutharat Ratchakumari) (th|พระเจ้าบรมวงศ์เธอ พระองค์เจ้าจุฑารัตนราชกุมารี) (17 December 1872 – 31 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.
| 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 |