Louis Bertrand may refer to:
Louis Bertrand (saint) (1526–1581), Spanish Dominican priest Louis Bertrand (mathematician) (1731–1812), Swiss mathematician Louis Bertrand (Quebec seigneur) (1779–1871), Canadian politician and businessman Aloysius Bertrand (Louis Jacques Napoléon Bertrand, 1807–1841), French poet Louis Bertrand (novelist) (1866–1941), French novelist, historian, and essayist Louis A. Bertrand (1808–1875), early French Mormon leader, translator of first French Book of Mormon Louis Bertrand (politician) (1856–1943), Belgian politician, author, and Minister of State
See also Louis Bertrand Castel (1688–1757), French mathematician Louis Bertrand Goodall (1851–1935), American politician