| Rosnaiganj | |
| Other Name: | Roshnibagh |
| Settlement Type: | Village |
| Pushpin Map: | India West Bengal#India3 |
| Pushpin Map Caption: | Location in West Bengal, India |
| Coordinates: | 24.1849°N 88.2647°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | West Bengal |
| Subdivision Type2: | District |
| Subdivision Name2: | Murshidabad |
| Unit Pref: | Metric |
| Population Total: | 417 |
| Population As Of: | 2011 |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Bengali, English |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Area Code Type: | Telephone/STD code |
| Area Code: | 03482 |
| Postal Code Type: | PIN |
| Registration Plate: | WB |
| Blank1 Name Sec1: | Lok Sabha constituency |
| Blank1 Info Sec1: | Murshidabad |
| Blank2 Name Sec1: | Vidhan Sabha constituency |
| Blank2 Info Sec1: | Murshidabad |
Rosnaiganj is a village in the Murshidabad-Jiaganj CD block in the Lalbag subdivision of Murshidabad district in the state of West Bengal, India.
Rosnaiganj is located at 24.1849°N 88.2647°W. The area was earlier popular as Dahpara and Farahbagh. However, as certain parts have been devoured by the Bhagirathi, parts of the existing area are known as Roshnibagh and Roshnaiganj. Roshnibagh is home to the Tomb of Sujauddin. There is a mosque known as Sujauddin's mosque. It was most likely built by Alivardi Khan after Shujauddin's death.[1]
According to the 2011 Census of India, Rosnaiganj had a total population of 417, of which 213 (51%) were males and 204 (49%) were females. Population in the age range 0–6 years was 40. The total number of literate persons in Rosnaiganj was 296 (78.51% of the population 6 years).[2]
Shuja-ud-Din Muhammad Khan succeeded his father-in-law Murshid Quli Khan as the Nawab of Bengal in 1727 and ruled successfully till his death in 1739.[3]
According to the List of Monuments of National Importance in West Bengal the Tomb of Sujauddin at Roshnibagh is a monument of national importance.[4]