Tufi is a town located on the south eastern peninsula of Cape Nelson, Oro Province, Papua New Guinea.
Tufi is located on one of many rias, or drowned river valleys, locally referred to as 'fjords', on Cape Nelson surrounded by many uncharted reefs.
Tufi was an Australian New Guinea Administrative Unit (ANGAU) Station during World War II.
The United States Navy built an PT boat advanced base at Tufi which commenced operations on 20 December 1942 to support the Battle of Buna–Gona.
The PT boat base was relocated to Morobe on 20 April 1943.