Tonglu (3036 m) is the one of the higher peaks of the Singalila Ridge and a small settlement inside the Singalila National Park in the Darjeeling subdivision, Darjeeling district in the state of West Bengal in India near the India - Nepal border. It is a roadside halt along the trekking route from Manebhanjan to Sandakphu.
It was also known as Tonglo in the 1800s.