Steven Ontiveros (born March 5, 1961) is a former pitcher in Major League Baseball. From 1985 through 2000, Ontiveros played for the Oakland Athletics (1985–88, 1994–95), Philadelphia Phillies (1989–90), Seattle Mariners (1993) and Boston Red Sox (2000). He batted and threw right-handed. He attended the University of Michigan where he gained a Bachelor of Science degree in Physical Education. He now owns and operates Player's Choice Academy in Scottsdale, Arizona. In 2008, he was the pitching coach for the Chinese National baseball team in the Beijing Olympics.