Stephen Douglas Yerkes (May 15, 1888 – January 31, 1971) was a professional baseball player.

During his early twenties, he played all or part of seven seasons in Major League Baseball.

He played in the first game at Boston's Fenway Park, on April 20, 1912, during which he had five hits, including two doubles.

During his major league career, he posted a .268 batting average with six home runs and 254 RBI in 711 games played.

He then began a career as a manager, working with various minor league teams between 1924 and 1947.