The Midwest Football League (MFL) was a minor professional American football league that existed from 1935 to 1940. Originally comprising teams from Ohio, Kentucky, Indiana, and Illinois, the league eventually expanded its reach to include teams from Missouri, Tennessee, Wisconsin, and California to become a national league with major league aspirations by 1939. In 1938, the league became the American Football League after the collapse of the second major league of the same name, but changed its name once again the following year to American Professional Football Association (APFA). Some sources refer to it as the American Professional Football League.