Alexander Turnbull

Alexander Turnbull may refer to:


 * Alexander Turnbull (lacrosse) (1872–1956), Canadian lacrosse player
 * Alexander Turnbull (bibliophile) (1868–1918), founder of the Alexander Turnbull Library, now held as part of the National Library of New Zealand
 * Alexander Douglas Turnbull (1903–1993), politician in British Columbia, Canada
 * Sandy Turnbull (Alexander Turnbull, 1884–1917), Scottish football player