| Sawai Prithvi Singh II | |
| Maharaja Sawai of Amber | |
| Succession: | 4th Raja of Jaipur |
| Reign: | 1768–1778 |
| Predecessor: | Madho Singh I |
| Successor: | Pratap Singh |
| Birth Date: | 9th January 1762 |
| Birth Place: | Jaipur Rajputana |
| Death Date: | 13 April 1778 (aged 15) |
| Spouse: | Rathorji (Bikawatji) Sardar Kanwarji d.of Maharaja Raj Singh of Bikaner Rathorji (Udaibhanotji) Abhai Kanwarji d.of Raja Akhai Singh of Bandanwara in Ajmer Rathorji (Kishansinghot) d.of Maharaja Birad Singh of Kishangarh |
| Issue: | 2 sons including Kunwar Man Singh(born posthumously) |
| House: | Kachwaha |
| Father: | Madho Singh I |
| Mother: | Sisodiniji (Chundawatji) Kundan Kanwarji d.of Rawat Jaswant Singh of Devgarh in Mewar |
| Religion: | Hinduism |
Sawai Prithvi Singh II (1762 – 13 April 1778), also known as Prithviraj Singh II, was the Kachwaha Rajput ruler of Jaipur Kingdom (reign 1768–1778). He was the eldest surviving son of his father Sawai Madho Singh I and grandson of Sawai Jai Singh II.
Maharaja Sawai Prithvi Singh II was five years old when he ascended the throne of the Kachwaha Kingdom of Jaipur in the year 1768 after his father's death. Being elder, Prithvi Singh succeeded his father on the throne and his mother queen Chundawatji became the regent. One of his nobles, Raja Pratap Singh of the Naruka Kachwaha
"Vanshavali" Genealogy of the rulers of Amber & Jaipur by "Harnath Singh Dundlod"
Genealogy Records of Raoji Ram Singh (Borada) Sarwad Ajmer,Rajasthan contact no.9928515865