Brendan Kevin Donnelly (born July 4, 1971) is a former Major League Baseball relief pitcher. A right-hander, Donnelly pitched for twenty-one teams (two of them independents), twelve organizations, two independent leagues, eleven organized minor leagues, and both the American League and the National League. He won the World Series in 2002 with the Anaheim Angels and was on the roster for the Boston Red Sox during their 2007 World Series victory. Donnelly was also the winning pitcher of the 2003 All-Star Game.