Fambong Lho Wildlife Sanctuary (Devanagari: फाम्बोन्ग ल्हो) is a 51 km2 (20 sq mi) large wildlife sanctuary in Gangtok district of the state of Sikkim in India. It is contiguous with Khangchendzonga National Park and located around 30 km (19 mi) west of Gangtok. It hosts a few small hamlets inside, namely Dikchu, Pangthang, and Mangan and is managed by State Forest Department. .