Joel Martin Zumaya (born November 9, 1984 in Chula Vista, California) is a Major League Baseball relief pitcher for the Detroit Tigers.

Zumaya was drafted out of Bonita Vista High School in the 11th round by the Tigers, the 320th overall selection of the 2002 MLB Draft. He was chosen because of his power arm, but it was not clear whether he would be able to develop adequate control or an off-speed pitch. He is widely known for his 100 MPH fastball and revved up attitude.

Zumaya began his stint in the Tigers minor league system as a starting pitcher. Because he was drafted straight out of high school, Zumaya frequently pitched against players older than himself. In 2003, the 18-year-old Zumaya made great strides pitching for the Low-A affiliate West Michigan Whitecaps. 2004 saw Zumaya begin the year pitching for the High-A affiliate Lakeland Tigers, before a late season promotion to the Double-A Erie SeaWolves. He finished the season with a .500 win–loss record and struggled with walks. Zumaya began the 2005 season back in Erie; however, his results were much improved from 2004, and he was soon promoted to the Triple-A Toledo Mud Hens. He finished the season with a 199 strikeouts in 151 innings pitched. In 77 games over four seasons, Zumaya was 27–19, and averaged 6.4 hits and 11.1 strikeouts per nine innings.