Chad Karl Reineke (born April 9, 1982) is an American former professional baseball pitcher.

He played in Major League Baseball (MLB) for the San Diego Padres, Oakland Athletics, and Cincinnati Reds.

His best season for the RedHawks came in 2001, when he made five starts and eight relief appearances, notching a 2–2 record with a 4.22 ERA.

Reineke advanced one level in 2005, playing the entire season for the Single-A Lexington Legends.

In 2006, Reineke played at two levels, the Single-A Salem Avalanche and the Double-A Corpus Christi Hooks.

On August 16, 2008, Reineke made his Major League debut as the starting pitcher for the Padres against the Philadelphia Phillies.

Before the 2009 minor league baseball season began, Reineke was traded to the Oakland Athletics for outfielder J. D. Pruitt.