Alexander Montgomery may refer to:
Alexander Montgomery (1667–1722), Irish MP for Monaghan County 1713–1722 Alexander Montgomery (1686–1729), Irish MP for Donegal Borough and for Donegal County 1727–1729 Alexander Montgomery (died 1785) (1721–1785), Irish MP for Monaghan County 1743–1760 and 1768–1783 Alexander Montgomery (1720–1800), Irish MP for Donegal County 1768–1800 Sir Alexander Montgomery, 3rd Baronet (1807–1888), a Royal Navy officer Alexander B. Montgomery (1837–1910), US Representative from Kentucky Alexander Montgomery (Mississippi lawyer) (died 1878), justices of the Supreme Court of Mississippi Alexander Montgomery (geologist) (1862–1932), Scottish-born New Zealand/Australian geologist Alexander Montgomery (rugby union)
See also Alexander Montgomerie (disambiguation)