Langadu Upazila is an upazila of Rangamati District in Chittagong Division, Bangladesh. It is located at 22.9500°N 92.1500°E. It is bounded by Baghaichhari and Dighinala on the north, Barkal on the south and east, Rangamati sadar, Nanearchar, Mahalchhari and Khagrachhari sadar on the west. Langadu thana was established in 1909 and was upgraded to an upazila in 1982.
Total Area: 388.5 sq. km
Density: 140 per sq. km
Literacy rate: average 27.5%
Hat Bazaar: 12 (Bara Mainimukh Bazar)
Upazila Health Complex: 1
Main crops: Paddy, cotton, sugarcane, pulse, corn, potato, and vegetables.