Buckner, 62, was officially named the Class A Boise hitting coach on Friday. He returned to coaching last season as the manager of the Brockton Rox, and led the team to a 51-42 record in the independent CanAm League.
Buckner replaces Desi Wilson, who was named the hitting coach for the Cubs' Class A Daytona team.
Buckner rejoins the Cubs for the first time since playing for the big league team from 1977 to 1984. He won the 1980 National League batting crown and earned a spot in the 1981 All-Star Game. A 22-year veteran, he was the White Sox hitting coach in 1996 and 1997, and also was a hitting coach in the Blue Jays' Minor League system.
Buckner played for the Dodgers, Cubs, Red Sox, Angels and Royals, hitting .289 with 174 career home runs and 1,208 RBIs. He played in two World Series: 1974, with the Dodgers, and 1986, with the Red Sox.
Carrie Muskat is a reporter for MLB.com. She writes a blog, Muskat Ramblings, and you can follow her on Twitter@CarrieMuskat. This story was not subject to the approval of Major League Baseball or its clubs.