Gary Wayne Majewski (pronounced /məˈdʒɛski/; born February 26, 1980, in Houston, Texas) is a Major League Baseball pitcher for the Philadelphia Phillies organization.

Majewski graduated in 1998 from St. Pius X High School in Houston, where he was unanimously selected for Houston Player of the Year for his achievement of maintaining a 1.64 ERA and a 14-3 record. With that, he led his team to the state championship in Class 5A TAPPS.

In the majors, Majewski had an ERA of 2.93 and 4 wins and 4 losses during the 2005 season. In his career, he has pitched 240.3 innings, as of the 2008 season.