Hanwant Singh
| Hanwant Singh I | |
|---|---|
| Maharaja of Marwar | |
| Maharaja (King) of Marwar | |
| Tenure | 9 January 1947–1949 |
| Predecessor | Umaid Singh I |
| Successor | Gaj Singh, Crown Prince of Marwar |
| Born | 16 June 1923 Jodhpur, Kingdom of Marwar, Rajputana, Empire of India |
| Died | 26 January 1952 (aged 28) Sumerpur Godwar,Rajasthan India |
| Spouse | Princess Krishna Kumari of Dhrangadhra (m. 1943 - 1952; his death) Zubeida Begum (m. 1950 - 1952; their deaths) |
| Issue | Chandreshwari Kumari, Crown Princess of Lambagraon Princess Shailesh Kumari Gaj Singh, Crown Prince of Marwar Prince Hukum Singh |
| House | Rathore |
| Father | Umaid Singh I of Marwar |
| Mother | Princess Badan Kanwar Osiyan |
| Religion | Hinduism |
Hanwant Singh I of Marwar (16 June 1923 – 26 January 1952) was the last ruler of the third largest Indian Kingdom of Marwar. He succeeded his father as the Maharaja of Jodhpur of the Rathore dynasty of Marwar on 9 June 1947 and held the title till his death at a young age in a plane crash on 26 January 1952.