The 1937 U.S. Open was the 41st U.S. Open, held June 10–12 at the South Course of Oakland Hills Country Club in Birmingham, Michigan, a suburb northwest of Detroit. Ralph Guldahl won the first of his two consecutive U.S. Opens, two strokes ahead of runner-up Sam Snead, making his U.S. Open debut. Guldahl won the title with 19 clubs in his bag. The USGA rule (4-4) regarding a maximum of 14 clubs went into effect the following January.