The largest wetland in India is the Sundarban Wetlands.

 Sundarban Wetland is located within the largest mangrove forest in the world, the Sundarbans, that encompasses hundreds of islands and a maze of rivers, rivulets and creeks. It is located in the Delta of the River Ganges and Brahmaputra on the Bay of Bengal in India and Bangladesh.

 For more relevant articles refer to the links given below:

• UPSC Environment and Ecology Questions
• Ramsar Convention
• UPSC Environment and Ecology