Kevin D. Ritz (born June 8, 1965) is an American former Major League Baseball right-handed pitcher.

He is an alumnus of William Penn University and Indian Hills Community College.

His best season was in 1996, when he went 17-11 in 213 innings pitched, despite recording a high ERA of 5.28 in hitter-friendly Coors Field and leading the National League in Earned Runs Allowed (125).

That year, Ritz won 10 games before the All Star break; the only other Rockies pitchers to have done so through 2010 were Shawn Chacón (2003), Aaron Cook (2008), Jason Marquis (2009), and Ubaldo Jiménez (2010).

In 753.1 innings pitched in 151 games, he committed only two errors in 211 total chances for a .991 fielding percentage.