William Leonard Hartley (December 12, 1916^[1] – May 4, 2003^[2]) was an electrician, insurance salesman and political figure in British Columbia. He represented Yale from 1963 to 1966 and Yale-Lillooet from 1966 to 1975 as a New Democrat.

He was born in Estevan, Saskatchewan, the son of Leonard Hartley and Sarah Ann Lee, both natives of England,^[1] and grew up in Clayburn, British Columbia. Hartley settled in Mission, B.C. He was president of the North Fraser Co-operative Association and served on the board of C.U. & C. Health Services.^[3] Hartley ran unsuccessfully a number of times as a Co-operative Commonwealth Federation candidate for a seat in federal and provincial elections, before he was elected provincially for the New Democratic Party in 1963. He was subsequently re-elected three times. He served in the provincial cabinet as Minister of Public Works, in the New Democratic Party government from 1972 to 1975^[4] Hartley was defeated when he ran for re-election in 1975.^[5] He retired from the insurance business in 1986.^[2]

Hartley help found Co-op Fire and Casualty, later The Co-operators.^[2]

In 1955, he married Marianne Martha Mueller a nurse from Lumsden, Saskatchewan.^[1] He had three children, Gretchen, Eric and Lisa.