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 in early 1974 after attending the Royals Baseball Academy. He was signed by the New Westminster Frasers in June 1974 and sold to the Portland Mavericks two weeks later. Portland released him in June 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 Oakland on July 1, 1980 and got his first hit off Lary Sorensen of the Milwaukee Brewers the next day. He went 9-for-18 in his first 5 games but hit under .200 thereafter, ending the season at .213. He earned a second cup of coffee in 1981, appearing in one game at second base and another as a pinch runner without any plate appearances. He 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 1985 on the Vermont coaching staff, Jeff began his minor league managerial career in 1986 with the Billings Mustangs. Overall, in 13 seasons, 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.