Chapadinha is a Brazilian municipality in the state of Maranhão. It is located 235 km south-east of the state capital São LuÃÂs. The population is 80,195 (2020) and the total area is 3,247 km<sup>2</sup>.
The municipality lies in the Munim River basin. The municipality contains the Chapada Limpa Extractive Reserve, created in 2007.
Chapadinha experiences a tropical savanna climate (Köppen: Aw) with hot temperatures and distinct wet and dry seasons. The city experiences a wet season from January to May. The dry season extends from July to November.