The 1970 Chicago White Sox season was the team's 70th season in the American League, and its 71st overall. They finished with a 56–106 record, their third-worst in 114 seasons of Major League Baseball, and finished in last position in the American League West, 42 wins behind the first-place Minnesota Twins. This was their last season of 100 losses or more until 2018, when they reached the century mark on the final day of the season.