| Kalyanpur | |
| Native Name: | कल्याणपुर |
| Settlement Type: | Village development committee |
| Mapsize: | 300px |
| Pushpin Map: | Nepal |
| Pushpin Label Position: | bottom |
| Pushpin Mapsize: | 300 |
| Pushpin Map Caption: | Location in Nepal |
| Subdivision Type: | Country |
| Subdivision Name: |  Nepal |
| Subdivision Type1: | Zone |
| Subdivision Name1: | Sagarmatha Zone |
| Subdivision Type2: | District |
| Subdivision Name2: | Saptari District |
| Leader Name1: | Late Moti lal Chaudhary has established kalyanpur market |
| Population As Of: | 2011 |
| Population Footnotes: | [1] |
| Population Total: | 8,724 |
| Population Density Km2: | auto |
| Population Blank1 Title: | Ethnicities |
| Timezone: | Nepal Time |
| Utc Offset: | +5:45 |
| Coordinates: | 26.65°N 86.63°W |
| Area Code: | 031 |
Kalyanpur is a former village development committee, and now headquarters of Khadak Municipality in Saptari District in the Sagarmatha Zone of south-eastern Nepal. At the time of the 2011 Nepal census it had a population of 8,724 people living in 1,705 individual households. This is one of the well-developed village development committee in Saptari District.Kalyanpur is a village development committee in Saptari District in the Sagarmatha Zone of south-eastern Nepal. At the time of the 2011 Nepal census it had a population of 8724 people living in 1705 individual households. This is one of the well-developed village development committee in Saptari District.VDC Name :KalyanpurVDC Households :1705District Name :SaptariArea in Square Km :19.1Zone :SagarmathaDevelopment Region :EasternEcological Zone :TeraiEcological Sub Zone :Eastern TeraiMale :4144Female :4580Total Population :8724Population Density :457 per km2