| Gamhariya | |
| Native Name: | गमहरिया |
| Native Name Lang: | hi |
| Settlement Type: | Community development block |
| Pushpin Map: | India Bihar#India |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Bihar, India |
| Coordinates: | 26.0439°N 86.7083°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Bihar |
| Subdivision Type2: | Region |
| Subdivision Name2: | Mithila |
| Subdivision Type3: | District |
| Subdivision Name3: | Madhepura |
| Unit Pref: | Metric |
| Population Total: | 65125 |
| Population As Of: | 2001 |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Maithili, Hindi |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Blank1 Name Sec1: | Lok Sabha constituency |
| Blank1 Info Sec1: | Madhepura |
| Blank2 Name Sec1: | Vidhan Sabha constituency |
| Blank2 Info Sec1: | Madhepura |
Gamhariya is one of the administrative divisions of Madhepura district in the Indian state of Bihar. The block headquarters are located at a distance of 18 km from the district headquarters, namely, Madhepura. Gamahariya is home place of the Professional Cricketer Anubhav Jha.
Gamhariya is located at
Saraswati Vidya Mandir, Principal: Shri Suryanarayana Jha.
Gamharia madhepura 852108
Panchayats in Gamhariya community development block are: Bhabani, Bhelwa, Gamhariya, Kodihar Tarewe, Orahi Ekperha, Itwa Jiwachhpur, Chikni and Jiwachhpur.
Important Person:
Bhavesh Kumar JTO at BSNL Odisha Circle.
In the 2001 census Gamhariya Block had a population of 65,125.[2]