This article is about the baseball player. For the scion of the Kennedy family, see Joseph Kennedy.

Joseph Darley Kennedy (born May 24 1979, in La Mesa, California) is an American baseball player. He is a left-handed pitcher, currently playing for the Colorado Rockies. He graduated from high school in El Cajon, California, and attended Grossmont Junior College , making his MLB debut on May 6 2001 with the Tampa Bay Devil Rays.

He played for the Orlando Tornados beginning in 1999, and ascended to the Durham Bulls on May 9 2001, while at the same time playing for the Devil Rays. In 2002, he was named a starting pitcher, and would pitch 72 consecutive starts, before being relegated to the bullpen with an injury in 2003. He was traded to the Colorado Rockies during the 2003 offseason/ In the 2004 season, he was the first Rockies pitcher to have a sub 4.00 ERA, setting a franchise record with a 3.66.

He is married and lives in Denver, Colorado.