Kahler is a German surname. Notable people with the surname include:
Art Kahler (1897–1982), American football and basketball player and coachBob Kahler (born 1917), American football player and coachErich Kahler (1885–1970), Czech-American literary scholar and essayistFerdinand N. Kahler (1864 – 1927), American inventor, entrepreneur and automobile pioneerGeorge Kahler (1889–1924), American baseball pitcherHans-Joachim Kahler (1908–2000), German generalKris Kahler (born 1983), Australian rugby league footballerLyndsay Kahler, American beauty pageant winnerOtto Kahler (1849–1893), Austrian physicianRoyal Kahler (1918–2005), American football playerWolf Kahler (born 1938), German actor