| Official Name: | Basail |
| Native Name: | বাসাইল |
| Settlement Type: | Upazila |
| Subdivision Type: | Country |
| Subdivision Name: |  Bangladesh |
| Subdivision Type1: | Division |
| Subdivision Name1: | Dhaka |
| Subdivision Type2: | District |
| Subdivision Name2: | Tangail |
| Population Total: | 188936 |
| Population As Of: | 2022 |
| Population Footnotes: | [1] |
| Population Density Km2: | auto |
| Area Total Km2: | 157.77 |
| Timezone: | BST |
| Utc Offset: | +6 |
| Coordinates: | 24°N 90°W |
| Postal Code Type: | Postal code |
| Postal Code: | 1920[2] |
| Area Code: | 09222[3] |
Basail (bn|বাসাইল) is an upazila of Tangail District in the Division of Dhaka, Bangladesh.
Basail is located at 24.2167°N 90.05°W. It has 38,565 households and total area 157.77 km2.
According to the 2011 Census of Bangladesh, Basail Upazila had 38,565 households and a population of 159,870. 32,219 (20.15%) were under 10 years of age. Basail had a literacy rate (age 7 and over) of 50.43%, compared to the national average of 51.8%, and a sex ratio of 1125 females per 1000 males. 13,496 (8.44%) lived in urban areas.[4] [5]
Basail Upazila is divided into six union parishads: Basail, Fulki, Habla, Kanchanpur, Kaoaljani, and Kashil. The union parishads are subdivided into 72 mauzas and 107 villages.[4]
See also: Education in Bangladesh. According to Banglapedia, Basail Govinda Government High School, founded in 1945, is a notable secondary school.[6]
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