Jason Hirsh, American baseball player
Jason Michael Hirsh (born February 20, 1982) is a former starting pitcher in Major League Baseball. In his career, he pitched for the Houston Astros and the Colorado Rockies. He stands at 6' 8" and weighs 250 lb (110 kg). He batted and threw right-handed. He threw a two-seam fastball, a four-seam fastball, a slider, and a changeup.

Hirsh was not highly recruited out of high school, but after attending California Lutheran University, he was drafted by the Houston Astros in the second round of the 2003 Major League Baseball Draft. From 2005–06, Hirsh won the Double-A Texas League Pitcher of the Year Award and the Triple-A Pacific Coast League Pitcher of the Year Award in successive seasons, as he went a combined 26–10 with 283 strikeouts. In 2006, he was called up to the major leagues for the first time, and he appeared in nine games with the Astros. During the offseason, he was traded to the Colorado Rockies. He was named to the Rockies' starting rotation in 2007 and made a career-high 19 starts before injuries curtailed his season. In 2008, he was limited to four games with the Rockies due to injuries; as it turned out, those would be his last game in the major leagues. He spent the next two season in the minors, getting traded to the New York Yankees (whom he never played in the major leagues with) in 2009.