| Hemnagar Union | |
| Native Name: | হেমনগর ইউনিয়ন |
| Native Name Lang: | bn |
| Pushpin Map: | Bangladesh |
| Pushpin Map Caption: | Location of Hemnagar in Bangladesh |
| Subdivision Type: | Country |
| Subdivision Name: | Bangladesh |
| Subdivision Type1: | Division |
| Subdivision Name1: | Dhaka Division |
| Subdivision Type2: | District |
| Subdivision Name2: | Tangail District |
| Subdivision Type3: | Upazila |
| Subdivision Name3: | Gopalpur Upazila |
| Government Type: | Union Council |
| Leader Title: | Chairman |
| Leader Name: | MD.Anisur Rahman Talukder(Bangladesh Awami League) |
| Established Title: | Established |
| Established Date: | 1984 |
| Area Total Km2: | 24.85 |
| Elevation M: | 15 |
| Population As Of: | 2011 |
| Population Total: | 33398 |
| Population Density Km2: | auto |
| Timezone: | BST |
| Utc Offset: | +6 |
| Coordinates: | 24.5709°N 89.8579°W |
| Postal Code Type: | Postal code |
| Postal Code: | 1992 |
Hemnagar Union (Bengali: হেমনগর ইউনিয়ন) is a union of Gopalpur Upazila, Tangail District, Bangladesh. It is situated north of Tangail.
The area is named for Hem Chandra Chowdhury, a zamindar who built his palace, Hemnagar Zamindar Bari, there in 1890.[1]
According to the 2011 Bangladesh census, Hemnagar Union had 8,331 households and a population of 33,398. The literacy rate (age 7 and over) was 45.9% (male: 48.1%, female: 43.9%).[2]