Elmer Ellsworth "Mike" Smith (March 23, 1868 – November 3, 1945) was an American professional baseball player who played as a pitcher and as an outfielder for 14 seasons in the major leagues from 1886 to 1901. He began his career as a pitcher for the Cincinnati Red Stockings, leading the AA in earned run average in 1887, then switched to playing the outfield when he began playing for the Pittsburgh Pirates in 1892. He returned the Reds for three seasons from 1898 to 1900, and then played one partial season with the New York Giants. He appeared in four games for the Pirates in 1901, then finished the season, and his career, with the Boston Beaneaters.
Mike Smith
| Given name: | Elmer Ellsworth Smith |
| Nicknames: | Elmer |
| Primary Pos: | Leftfield |
| Hght/Wght: | 5'11" / 178 lbs |
| Bats/Throws: | L / L |
| Born: | Mar 23, 1868 in Pittsburgh, PA |
| Died: | Nov 3, 1945 in Pittsburgh, PA (77 years old) |
| Debut: | Sep 10, 1886 |