| Jamadaha | |
| Native Name: | जमादह |
| Settlement Type: | Village development committee |
| Pushpin Label Position: | bottom |
| Pushpin Mapsize: | 360 |
| Pushpin Map Caption: | Location in Nepal |
| Subdivision Type: | Country |
| Subdivision Name: |  Nepal |
| Subdivision Type1: | Zone |
| Subdivision Name1: | Sagarmatha Zone |
| Subdivision Type2: | District |
| Subdivision Name2: | Siraha District |
| Population As Of: | 3992 |
| Population Density Km2: | auto |
| Population Blank1 Title: | Ethnicities |
| Timezone: | Nepal Time |
| Utc Offset: | +5:45 |
Jamadaha is a village development committee in Siraha District in the Sagarmatha Zone of south-eastern Nepal. At the time of the 1991 Nepal census it had a population of 3992 people living in 741 individual households.[1]