Dave Bush

David Thomas Bush (born November 9, 1979) is an American professional baseball coach and former pitcher who is the current assistant pitching coach for the Texas Rangers. He played in Major League Baseball (MLB) for the Toronto Blue Jays, Milwaukee Brewers, and Texas Rangers, as well as in the KBO League for the SK Wyverns.

From 2020 to 2023, Bush was the pitching coach for the Boston Red Sox.

Bush graduated from Conestoga High School in Berwyn, Pennsylvania and played college baseball at Wake Forest University where he was a double major in psychology and sociology. In 2000 and 2001, he played collegiate summer baseball for the Chatham A's of the Cape Cod Baseball League (CCBL), where he posted a league-leading 11 saves in 2000 with an earned run average of 0.84, and returned in 2001 to post an ERA of 0.34. In 2011, Bush was inducted into the CCBL Hall of Fame.

On August 11, 2010, in a game against the Arizona Diamondbacks, Bush became the third player in Major League history to allow four straight home runs (Paul Foytack and Chase Wright were the others). Bush was touched for consecutive solo blasts by Adam LaRoche, Miguel Montero, Mark Reynolds and Stephen Drew.

On January 30, 2011, Bush signed a minor league contract with the Texas Rangers as their long reliever. He was designated for assignment on July 1, 2011. He was released on July 6.

Bush signed a minor league contract with the Chicago Cubs on July 15. He opted out of his contract on August 11, after appearing in five games for the Triple-A Iowa Cubs, recording a 6.14 ERA.

On August 14, 2011, Bush signed a minor league contract with the Philadelphia Phillies. On June 5, 2012, Bush opted out of that contract to pitch for the SK Wyverns of the KBO.

Bush started the 2013 season with the Triple-A Buffalo Bisons, but the Blue Jays brought him up on April 6 when Jeremy Jeffress was designated for assignment. Bush was designated for assignment on April 8, 2013. Bush cleared waivers and was assigned to Triple-A Buffalo.