William Dempster

William Dempster
Born(1876-10-21)21 October 1876
Died25 October 1964(1964-10-25) (aged 88)
Resting placeBurnaby, British Columbia
Police career
CountryCanada
DepartmentNorth-West Mounted Police,
Royal Canadian Mounted Police
Service years1897–1934
RankInspector
MemorialsDempster Highway

William John Duncan Dempster (21 October 1876 – 25 October 1964) was a member of the North-West Mounted Police (NWMP) in the Yukon Territory during the early 20th century. He led an expedition which found the remains of members of the Lost Patrol, three NWMP officers and an ex-NWMP officer guide who disappeared on the trail between Fort McPherson and Dawson City in the winter of 1910–11. The Dempster Highway in northern Canada is named for him.