| Maharaja Surat Singh | |
| Succession: | Maharaja of Bikaner |
| Reign: | 1787–1828 |
| Predecessor: | Pratap Singh |
| Successor: | Ratan Singh |
| Birth Date: | 18 December 1765 |
| Birth Place: | Junagarh Fort Bikaner |
| Death Date: | 25 March 1828 |
| Death Place: | Junagarh Fort Bikaner |
| Spouse: | Panwarji Sardar Kanwarji of Jaitsisar in Bikaner Bhatiyaniji (Barsalpuriji) Shyam Kanwarji of Barsalpur in Bikaner Bhatiyaniji Abhai Kanwarji of Sindhu in Jaisalmer Kachwahiji (Rajawatji) Shringar Kanwarji of Baleri in Bikaner |
| House: | Bikawat-Rathore |
| Father: | Gaj Singh |
| Mother: | Kachwahiji (Rajawatji) Phool Kanwarji grand-daughter of Raja Kushal Singhji of Jhalai in Jaipur |
Maharaja Surat Singh was the ruler of the Kingdom of Bikaner between 1787 and 1828. It was during his reign that the Kingdom of Bikaner became a princely state of the British Empire.
Surat Singh was born in 1765. His father was Gaj Singh, who ruled as Maharaja between 1746 and 1787. Upon Gaj Singh's death, his eldest surviving son Raj Singh ascended the throne, only to die a few days later. Raj Singh's son Pratap Singh, a boy of six, was crowned, with Surat Singh being appointed as the regent.
Pratap Singh survived his father for a short while, but died soon after. The Khiyat ascribes his death to smallpox, but it is agreed upon by historians that he was, in all probability, murdered by Surat Singh.
Faced with a Thakur rebellion, Surat Singh decided to seek British assistance. He sent an emissary to Delhi in order to negotiate a treaty with Charles Metcalfe. On 9 March 1818, the treaty was signed, which stated that the rulers of Bikaner were bound to act in “subordinate co-operation” to the British, in exchange for protection and British assistance in quelling any rebellions.
Surat Singh died in 1828, and was cremated, with his final rites being performed by his son Ratan Singh. Ratan Singh succeeded him as Maharaja.