| Nathnagar | |
| Settlement Type: | Town in Bhagalpur district |
| Pushpin Map: | India Bihar#India3 |
| Pushpin Map Caption: | Location in Bihar, India##Location in India |
| Coordinates: | 25.2122°N 86.9832°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Bihar |
| Subdivision Type2: | Region |
| Subdivision Name2: | Anga |
| Subdivision Type3: | District |
| Subdivision Name3: | Bhagalpur |
| Subdivision Type4: | Urban Agglomeration |
| Subdivision Name4: | Bhagalpur Urban Agglomeration |
| Government Type: | census town |
| Unit Pref: | Metric |
| Population Total: | 7,600 |
| Population As Of: | 2023 |
| Population Density Km2: | auto |
| Demographics Type1: | Language |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Hindi[1] |
| Demographics1 Title2: | Additional official |
| Demographics1 Info2: | Urdu |
| Demographics1 Title3: | Regional |
| Demographics1 Info3: | Angika[2] |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Postal Code Type: | PIN |
| Registration Plate: | BR-10 |
| Blank1 Name Sec1: | Lok Sabha constituency |
| Blank1 Info Sec1: | Bhagalpur |
| Blank2 Name Sec1: | Vidhan Sabha constituency |
| Blank2 Info Sec1: | Nathnagar |
Nathnagar or Nurpur is a town in Bhagalpur district in the Anga region of Bihar,India.It is a census town of Bhagalpur District and the headquarters of Nathnagar C.D block.[3] [4]