Alexander Thom (disambiguation)

Alexander Thom (1894–1985) was a Scottish engineer.

Alexander Thom may also refer to:

• Alexander Thom (military surgeon) (1775–1845), Scottish military surgeon, judge and political figure in Upper Canada
• Alexander Thom (almanac editor) (1801–1879), Scottish publisher in Ireland
• James Alexander Thom (born 1933), American author