Allan McKenzie McDonald, DFC (4 July 1888 – 10 June 1953) was an Australian politician who served in the House of Representatives from 1940 until his death in 1953.

He was the fourth child born to Elizabeth (née McKenzie) and Allan McDonald, both of whom were originally from Geelong.

He left Melbourne in September aboard HMAT Port Sydney,[3] and joined the 14th Battalion in France in December.

He was minister for external territories in the governments of Robert Menzies and Arthur Fadden in 1941, and contested the UAP leadership in 1941 and 1943; he lost the 1941 ballot to Billy Hughes by one vote.

When the Coalition returned to power in 1949, he stepped back from prominence, confining himself to party room discussion; this may have been due to his ill health.