The 1920 PGA Championship was the third PGA Championship, which is now considered one of golf's major championships. It was held August 17–21 at the Flossmoor Country Club outside Flossmoor, Illinois, a suburb south of Chicago. The field of 32 qualified through sectional tournaments. They competed in 36-hole match play rounds in a single-elimination tournament. Two-time defending champion Jim Barnes lost in the second round to Clarence Hackney, 5 and 4.