Thalangama Wetland is a unique biodiversity hotspot and a protected area located in Thalangama, near Sri Jayawardenepura Kotte.

Declared an Environmental Protection Area in 2017, it is surrounded by paddy fields, canals, and marshes that support a diverse range of bird and plant species.

Thalangama Lake and Averihena Lake are the main water bodies within the wetland.