Cantonment Thana () is a Thana of Dhaka district in Dhaka, Bangladesh. It includes the Army Headquarters, Naval Headquarters and the Air Force Headquarters. Cantonment Thana was formed in 1976.
Cantonment is located at . It has 36540 units of household and total area 14.47 km<sup>2</sup>.
According to the 2022 Bangladeshi census, Cantonment Thana had 33,651 households and a population of 135,785. 6.98% of the population were under 5 years of age. Cantonment had a literacy rate (age 7 and over) of 94.30%: 95.80% for males and 92.59% for females, and a sex ratio of 113.09 males for every 100 females.
According to the 2011 Census of Bangladesh, Cantonment Thana had 25,198 households with an average household size of 4.42 and a population of 131,864. Males constituted 57.03% (75,201) of the population while females 42.97% (56,663). Cantonment Thana had a literacy rate (age 7 and over) of 84.9%, compared to the national average of 51.8%, and a sex ratio of 133.There were 264 floating people in this jurisdiction.
The religious breakdown was Muslim 98.00% (129,230), Hindu 1.40% (1,844), Christian 0.39% (515), Buddhist 0.17% (219), and others 0.04% (56). The ethnic minority people living there were 144 people in total.