William Frederick Holm (July 21, 1912 – July 27, 1977) was a Major League Baseball catcher who played for the Chicago Cubs (1943–1944) and Boston Red Sox (1945). A native of Chicago, he stood 5'10½" and weighed 168 lbs. Holm is one of many ballplayers who only appeared in the major leagues during World War II. He made his major league debut on September 24, 1943 in a home game against the Philadelphia Blue Jays at Wrigley Field.