Stanley Lewis Yerkes (November 28, 1874 – July 28, 1940) nicknamed "Yank", was a professional baseball pitcher.

He played in Major League Baseball from 1901 to 1903 for the Baltimore Orioles and St. Louis Cardinals.

Yerkes set many career highs during the 1903 season while pitching for the Cardinals.

He appeared in 39 games (starting 37) during that season, and had a 12–21 record with a 3.66 ERA.

This biographical article relating to an American baseball pitcher born in the 1870s is a stub.