William McDonald (Australian politician)

Sir William John Farquhar "Black Jack" McDonald (3 October 1911 – 13 September 1995) was an Australian politician.

He was born at Binnum in South Australia to grazier John Nicholson McDonald and Sarah McInnes, and attended the local state school and then Scotch College in Adelaide.

He was a grazier in South Australia from 1930, moving to a sheep station near Neuarpurr in Victoria in 1935.

A member of the Liberal and Country Party, he was elected to the Victorian Legislative Assembly in 1947 for Dundas.

Knighted in 1958, he resigned the speakership in 1967 to become Minister of Lands, Soldier Settlement and Conservation.