Elmer Smith may refer to:
Elmer Smith (activist) (1888–1932), American lawyer and union defender Elmer Smith (baseball) (1892–1984), baseball outfielder who played from 1914 through 1925 Mike Smith (1890s outfielder) (1868–1945), real name Elmer Ellsworth Smith, baseball outfielder who played from 1886 through 1901 Elmer Roy Smith (1913–1989), politician in Ontario, Canada Elmer Boyd Smith (1860–1943), American writer and illustrator Elmer Smith (American football) (died 1987), American football and basketball player and coach Elmer Smith Power Plant, a power plant in Owensboro, Kentucky