| Siwa | |
| Native Name: | सिवा |
| 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: | Mechi Zone |
| Subdivision Type2: | District |
| Subdivision Name2: | Panchthar District |
| Population As Of: | 1991 |
| Population Total: | 3970 |
| Population Density Km2: | auto |
| Population Blank1 Title: | Ethnicities |
| Timezone: | Nepal Time |
| Utc Offset: | +5:45 |
| Coordinates: | 27.09°N 87.76°W |
Siwa is a market center of Phidim Municipality in Panchthar District in the Mechi Zone in eastern Nepal. It was annexed to Phidim on 18 May 2014 to form the municipality.[1] [2] At the time of the 1991 Nepal census it had a population of 3970.[3]