- This article is about the baseball pitcher. For the infielder, see Steve Ontiveros (infielder).
Steven Ontiveros (born March 5, 1961 in Tularosa, New Mexico) 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.
In a ten-season career, Ontiveros posted a 34-31 record with 19 saves and a 3.67 ERA in 207 games pitched (73 as a starter).
He now works at Spin Doctor in Scottsdale, Arizona. In 2008, he was the pitching coach for the Chinese National baseball team in the Beijing Olympics.