William McKenzie Barlow (November 2, 1870 – February 14, 1963) was a Canadian amateur ice hockey player in the late 19th century.

Barlow is credited with scoring the first Stanley Cup-winning goal in history in the final playoff match of 1894.

Barlow became a director of Lymans Limited pharmaceuticals during the 1930s, and secretary of the Welfare Foundation until his retirement in 1949.

[1] As a member of the first Stanley Cup-winning squad in 1893, the Montreal Amateur Athletic Association gave Barlow a ring to commemorate the win.

[3] Source: Coleman (1966) This biographical article relating to a Canadian ice hockey player is a stub.