Alexander Mackenzie most commonly refers to:

• Alexander Mackenzie (explorer) (1764–1820), Scottish explorer and commercial partner of the North West Company
• Alexander Mackenzie (politician) (1822–1892), second prime minister of Canada

Alexander Mackenzie or MacKenzie may also refer to:

• Alexander Mackenzie of Kintail (died after 1471), Scottish clan chief
• Alexander Muir Mackenzie (1764–1835), Scottish advocate and landowner
• Alexander Slidell Mackenzie (1803–1848), US Navy officer involved in the "Somers Affair"
• Alexander Mackenzie (historian) (1838–1898), Scottish historian
• Alexander Slidell MacKenzie (1842–1867), US Navy officer, son of Alexander Slidell Mackenzie
• Alexander Mackenzie (civil servant) (1842–1902), British colonial official in Burma
• Alexander Mackenzie (engineer) (1844–1921), US Army Chief of Engineers
• Alexander Mackenzie (composer) (1847–1935), Scottish violinist, conductor, composer and head of the Royal Academy of Music in London
• Alexander Marshall Mackenzie (1848–1933), Scottish architect
• Alick Mackenzie or Alexander Cecil Knox Mackenzie (1870–1947), Australian cricketer
• Alexander MacKenzie (priest) (1876–1969), Provost of St Andrew's Cathedral, Inverness
• Alexander George Robertson Mackenzie (1879–1963), Scottish architect and son of Alexander Marshall Mackenzie
• Alex Mackenzie (1885–1965), Scottish character actor
• Alexander Mackenzie (artist) (1923–2002), St Ives school artist
• Alexander Mackenzie (Australian politician) (born 1941)
• Alexander MacKenzie (rugby union) (born 1956), Scottish rugby player

• Alexander McKenzie (disambiguation)
• Alister MacKenzie (1870–1934), British golf course architect
• Sandy MacKenzie (born 1973), ice hockey player

This disambiguation page lists articles about people with the same name.
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