Air Vice Marshal Clifford Mackay McEwen CB, MC, DFC & Bar (2 July 1896 – 6 August 1967) was a fighter ace in the British Royal Flying Corps during World War I and a senior commander in the Royal Canadian Air Force during World War II.

During his command the performance of the RCAF was greatly improved, becoming the most successful Allied bombing force in several ways.

By late 1944 the RCAF had both the best survival rate and the highest accuracy of any bombing force.

[4] McEwen was born on 2 July 1896 in Griswold, Manitoba and grew up in Moose Jaw, Saskatchewan.

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