Ian MacKenzie or McKenzie may refer to:
Ian Alistair Mackenzie (1890-1949), Canadian parliamentarian,
Ian MacKenzie (swimmer) (born 1953), Canadian former swimmer,
Iain McKenzie (born 1959), Scottish Labour politician,
Ian McKenzie (ice hockey) (born 1987), Canadian ice hockey player,
Ian Mackenzie-Kerr (1929-2005), British book designer,
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