Belonia is a town and Municipal Council in South Tripura district, Tripura, India. It is also the headquarters of South Tripura District. It is linked with Agartala by National Highway 44 via Udaipur and also via Rajnagar, Sonamura, Melaghar, and Bishramganj. Belonia lies on a border with Bangladesh.
Belonia is located at 23.25°N 91.45°E. It has an average elevation of 23 metres (75 feet).
As of 2011 India census,Belonia Municipal Council has a population of 19,996. Mrs. Subhra Mitra is the present Chairperson of Belonia Municipal Council. Males constitute 52% of the population and females 48%. Belonia has an average literacy rate of 95%, higher than the national average of 59.5%; with 54% of the males and 46% of females literate. 9% of the population is under 6 years of age.
Belonia assembly constituency is in the Tripura West Lok Sabha constituency.