| Baniajan Union | |
| Native Name: | বানিয়াজান ইউনিয়ন |
| Native Name Lang: | bn |
| Pushpin Map: | Bangladesh |
| Pushpin Map Caption: | Location of Baniajan 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: | Dhanbari Upazila |
| Government Type: | Union Council |
| Leader Title: | Chairman |
| Leader Name: | Shamsul Alam Talukdar[1] |
| Established Title: | Established on |
| Established Date: | 1984 |
| Area Total Km2: | 12.94 |
| Elevation M: | 21 |
| Population As Of: | 2011 |
| Population Total: | 17271 |
| Population Density Km2: | auto |
| Timezone: | BST |
| Utc Offset: | +6 |
| Coordinates: | 24.6789°N 89.9498°W |
| Postal Code Type: | Postal code |
| Postal Code: | 1997 |
Baniajan Union (Bengali: বানিয়াজান ইউনিয়ন) is a union parishad of Dhanbari Upazila, Tangail District, Bangladesh. It is situated 67 km north of Tangail.
According to Population Census 2011 performed by Bangladesh Bureau of Statistics, The total population of Baniajan union is 17271. There are 4760 households in total.[2]
The literacy rate of Baniajan Union is 41.2% (Male-43.6%, Female-39%).[3]