| Deumai Municipality | |
| Native Name: | देउमाई नगरपालिका |
| Settlement Type: | Municipality |
| Pushpin Map: | Nepal Province1#Nepal |
| Pushpin Label Position: | bottom |
| Pushpin Mapsize: | 300px |
| Pushpin Map Caption: | Location in Province No. 1 |
| Subdivision Type: | Country |
| Subdivision Name: |  Nepal |
| Subdivision Type1: | Region |
| Subdivision Name1: | Eastern |
| Subdivision Type2: | Zone |
| Subdivision Name2: | Mechi Zone |
| Subdivision Type3: | District |
| Subdivision Name3: | Ilam District |
| Leader Title: | Mayor |
| Leader Name: | Surya Prsasd Pokharel (NCP) |
| Leader Title1: | Deputy Mayor |
| Leader Name1: | Pawi Maya Rai (NCP) |
| Established Title: | Established |
| Established Date: | 2014 |
| Area Total Km2: | 50.7 |
| Population As Of: | 2011 Nepal census |
| Population Total: | 10946 |
| Population Density Km2: | auto |
| Population Blank1 Title: | Ethnicities |
| Timezone: | NST |
| Utc Offset: | +5:45 |
| Coordinates: | 26.9331°N 87.8253°W |
Deumai is a municipality in the eastern development region of Ilam District in the Mechi Zone of Nepal. The new municipality was formed by merging two existing villages Mangalbare and Dhuseni on 02 Dec 2014.[1] [2] The office of the municipality is that of the former Mangalbare village development committee.
Deumai municipality was formed in 2014 by merging Mangalbare and Dhuseni; it has a total population of 10,946 according to 2011 Nepal census.[3]