Robert Edward Addy (February 1842 – April 9, 1910), nicknamed "The Magnet", was a Canadian right fielder and second baseman in Major League Baseball, whose professional career spanned from 1871 in the National Association to 1877 in the National League. He is credited as the first player to introduce the slide in an organized game, and later attempted to create a game of baseball that would have been played on ice. He is also credited as the first person born in Canada to appear in a major league game.