| HH Maharana Sir Sajjan Singh | |
| Maharana of Mewar Hindua Suraj | |
| Succession: | Maharana of Udaipur |
| Reign: | 1874–84 |
| Predecessor: | Shambhu Singh |
| Successor: | Fateh Singh |
| Birth Date: | 18 July 1859 |
| Spouse: | HH Maharaniji Sa Rathorji Shri Takht Kanwarji Saheba of Idar State HH Maharaniji Sa Rathorji Kishansinghot of Kishangarh State HH Maharaniji Sa Rathorji Shri Kesar Kanwarji Saheba of Idar State |
| Issue: | Maharajkumarji Surya Singh (died infant) by the 3rd Maharani |
| House: | Ranawat-Sisodia |
| Father: | Maharaj Shakti Singh of Bagore |
| Mother: | Rathorji (Kishansinghot) Roop Kanwarji Maji Saheba d.of Raja Shardul Singh of Gangwana in Kishangarh State |
Colonel HH Maharajadhiraj Maharana Sir Sajjan Singh (18 July 1859 – 23 December 1884), was the Sisodia Rajput ruler of the Princely State of Udaipur (r. 1874 – 1884).[1] He was a son of Maharaj Shakti Singh of Bagore[2] and was adopted by his childless first cousin Maharana Shambhu Singh whom he succeeded in the year 1874. He adopted Fateh Singh a descendant of Maharana Sangram Singh II from the Shivrati branch of the family.[3]