| Basail Union | |
| Native Name: | বাসাইল ইউনিয়ন |
| Native Name Lang: | bn |
| Pushpin Map: | Bangladesh |
| Pushpin Map Caption: | Location of Basail Union 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: | Basail Upazila |
| Government Type: | Union Council |
| Leader Title: | Chairman |
| Established Title: | Established |
| Established Date: | 1984 |
| Area Total Km2: | 26.12 |
| Elevation M: | 12 |
| Population As Of: | 2011 |
| Population Total: | 26706 |
| Population Density Km2: | auto |
| Timezone: | BST |
| Utc Offset: | +6 |
| Coordinates: | 24.2335°N 90.0143°W |
| Postal Code Type: | Postal code |
| Postal Code: | 1920 |
Basail Union (Bengali: বাসাইল ইউনিয়ন) is a union of Basail Upazila, Tangail District, Bangladesh. It is situated east of Tangail, the district headquarters.
According to the 2011 Bangladesh census, Basail Union had 6,388 households and a population of 26,706. The literacy rate ehhdhejsjdn(age 7 and over) was 50.4% (male: 53.2%, female: 48%).[1]