Jeffrey Lindon Cox
- Bats Right, Throws Right
- Height 5' 11", Weight 170 lb.
- High School South Hills High School
- Debut July 1, 1980
- Final Game September 16, 1981
- Born November 9, 1955 in Los Angeles, CA USA
Second baseman Jeff Cox signed his first pro contract with the Kansas City Royals in August 1973 but was released by the team in early 1974 after the attending the Royals Baseball Academy but before playing in a game. He was signed by the New Westminster Frasers in June of 1974 and sold to the Portland Mavericks two weeks later. Portland released him in June of 1975 and he signed with the Oakland Athletics three days later. In 1977, he was a Southern League All-Star with the Chattanooga Lookouts and led the circuit with 68 stolen bases.
Cox reached the majors with the A's on July 1, 1980 and got his first big league hit off Lary Sorensen of the Milwaukee Brewers the next day. He went 9-for-18 in his first 5 major league games, but he hit under .200 from there onward, ending the season with a .213 mark. He earned a second cup of coffee in the bigs with Oakland in 1981, appearing in one game at second base and another as a pinch runner, but did not make a plate appearance that season.
Cox later played in the Detroit Tigers and Kansas City Royals systems and spent time as a player/coach in the Cincinnati Reds organization with the Vermont Reds in 1984. After spending the next season on the Vermont coaching staff, he began his managerial career in 1986 with the Billings Mustangs. Overall, in 13 seasons as a minor league manager, he posted a 736-863 mark.
In 1995, Cox was the Royals third base coach, and he was a member of the Montreal Expos coaching staff in 2000 and 2001. From 2002 to 2005, he was a Florida Marlins coach. In 2006 and 2007, he was the Pittsburgh Pirates' third base coach, then joined the Chicago White Sox in the same capacity from 2008 to 2011.