Jack Edward Baker (born May 4, 1950 in Birmingham, Alabama) is a former first baseman in Major League Baseball who played for the Boston Red Sox between 1976 and 1977. Baker batted and threw right-handed. Listed at 6' 5", 225 lb., he was selected by Boston in the 1971 draft out of Auburn University.
In a 14-game career, Baker was a .115 hitter (3-for-26), including one home run, one run, and two RBI.
During the 1977 midseason, Baker was traded to the Cleveland Indians but he did not play for them.