| Ram Singh | |
| Maharaja of Marwar | |
| Succession: | First Reign |
| Reign: | 18 June 1749 – July 1751 |
| Reign-Type: | Tenure |
| Coronation: | 13 July 1749, Shringar Chowk, Mehrangarh, Jodhpur |
| Predecessor: | Abhai Singh |
| Successor: | Bakht Singh |
| Birth Date: | 28 July 1730 |
| Birth Place: | Mehrangarh, Jodhpur |
| Death Date: | September 1772 (aged 42) |
| Death Place: | Jaipur |
| Spouse: | Kachwahiji Deep Kanwarji of Jaipur Jadejiji Udai Kunwarba of Jamnagar in Gujarat |
| Issue: | No issue |
| House: | Jodha Rathore |
| Father: | Abhai Singh |
| Mother: | Narukiji Bakht Kanwarji d.of Rao Kishor Singhji of Ladana in Jaipur |
| Religion: | Hinduism |
| Succession1: | Second Reign |
| Reign-Type1: | Tenure |
| Reign1: | 31 January 1753 – September 1772 |
| Predecessor1: | Vijay Singh |
| Successor1: | Vijay Singh |
Maharaja Ram Singh (28 July 1730 – September 1772), was the Rathore Ruler of Marwar Kingdom,also called Jodhpur State. He ruled 18 June 1749 – July 1751, and 31 January 1753 – September 1772.[1]
He succeeded on the death of his father, Maharaja Abhai Singh, on 18 June 1749. However, he was defeated in battle by his uncle Maharaja Bakht Singh at Luniawas on 27 November 1750, and was expelled from Jodhpur. He sought refuge in Jaipur in July 1751. In 1753, he reascended the gadi for the second time after deposing Maharaja Vijay Singh, his cousin.
Maharaja Ram Singh died at Jaipur in September 1772. He was succeeded by Maharaja Vijay Singh, who then became Maharaja for the second time himself.