Alexander Macfarlane (disambiguation)

Alexander Macfarlane (1851–1913), was a Scottish-Canadian logician, physicist, and mathematician.

Alexander Macfarlane may also refer to:

• Alexander MacFarlane (judge) (died 1755), Fellow of the Royal Society and benefactor of the Macfarlane Observatory
• Alexander Macfarlane (politician) (1818–1898), Nova Scotian lawyer and senator
• Alexander G. J. MacFarlane, 1993 recipient of the Faraday Medal
• Sandy MacFarlane (1878–?), Scottish football player and manager
• Alex MacFarlane, recipient of the first Australian passport with an 'X' sex descriptor