Alexander McLean or MacLean may refer to:

• Alexander McLean (Province of Canada politician) (1793–1875), Canadian political figure
• AJ McLean (born 1978), American musician and singer
• Alec McLean (born 1950), New Zealand rower
• Alex McLean, British musician and researcher
• Alex MacLean (born 1947), American photographer
• Alex MacLean (footballer), Scottish footballer
• Alexander Daniel McLean, Canadian politician
• Alexander Grant McLean (1824–1862), Surveyor General of New South Wales (Australia)
• Alexander Kenneth Maclean (1869–1942), Canadian politician and judge
• Alexander Neil McLean (1885–1967), former member of the Senate of Canada from New Brunswick
• Alexander McLean (activist) (born 1985), founder of African Prisons Project
• Alexander McLean, sea captain and the basis for the protagonist in The Sea-Wolf, a Jack London story
• Alexander Maclean, 13th Laird of Ardgour (1764–1855), soldier and Highland laird
• Alexander Maclean (painter) (1840–1877), Scottish painter