Jason Andrew Frasor (born August 9, 1977 in Chicago, Illinois) is a right-handed relief pitcher in Major League Baseball who currently plays for the Toronto Blue Jays. He made his debut with the Blue Jays in 2004, and he had a 4.08 ERA in 63 games.
A starter in the low minors from 1999 to 2002, he was converted to a reliever in 2003. The Blue Jays acquired him from the Los Angeles Dodgers prior to the 2004 season in exchange for Jayson Werth. He was sent to the minors on April 28, 2006, and recalled on May 11, 2006. On July 2, 2006, Frasor was demoted again to Triple-A; the Blue Jays recalled Shaun Marcum in his place.
On January 9, 2007, Frasor signed a one-year contract for the 2007 season with the Toronto Blue Jays, avoiding salary arbitration. The contract was worth $825,000 with cumulative incentives based upon games pitched.