Ernest Riles (born October 2, 1960) is an American former professional baseball shortstop and third baseman.

From 1985 through 1993, Riles played for the Milwaukee Brewers (1985–1988), San Francisco Giants (1988–1990), Oakland Athletics (1991), Houston Astros (1992) and Boston Red Sox (1993) of the Major League Baseball (MLB).

Riles grew up in Georgia, where he was the youngest child in a family of ten boys and one girl.

After frequent trips to the disabled list, Riles was traded from the Brewers to the San Francisco Giants for Jeffrey Leonard on June 8, 1988.

Riles also played with Oakland and Houston, and ended his major league career with the Boston Red Sox in the 1993 season.