| Mortar | |
| Native Name: | Jagatnathpur |
| Settlement Type: | Village |
| Pushpin Map: | India Bihar#India |
| Pushpin Label Position: | right |
| Coordinates: | 25.721°N 86.136°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Bihar |
| Subdivision Type2: | District |
| Subdivision Name2: | Begusarai |
| Subdivision Type3: | CD block |
| Subdivision Name3: | Garhpura |
| Unit Pref: | Metric |
| Area Total Ha: | 271 |
| Elevation M: | 41 |
| Population Total: | 1817 [1] |
| Population As Of: | 2011 |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Maithili, Hindi |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Area Code Type: | Telephone code |
| Area Code: | 06243 |
| Blank1 Name Sec1: | Sex ratio |
| Iso Code: | IN-BR |
Mortar is a village in the Garhpura block of Begusarai district in the Indian state of Bihar about 32.5km (20.2miles) north of district capital, Begusarai.[2] The 2011 census gives its population as 1,817.[1] It comes under Malipur Panchayat and under post office Malipur.
As of 2009, the water supply is from wells and hand pumps; there is no tap water. Domestic electricity is available. Primary, middle and secondary schooling is provided within the village.[1] The nearest police station is at Garhpura.
The annual Durga Puja festival is organised by the Mortar Durga Puja Samiti. A mela takes place in the school ground, when an idol of the goddess Durga is made and people gather together to celebrate. Sweets are bought, new clothes are worn, people offer their prayers, and different types of functions are organised, like Kushti. At night, you can enjoy Jagran along with a play by the Mortar Youth Front.