1938 U.S. National Championships – Men's singles

Men's singles
1938 U.S. National Championships
Champion Don Budge
Runner-up Gene Mako
Score6–3, 6–8, 6–2, 6–1

Don Budge defeated Gene Mako in the final, 6–3, 6–8, 6–2, 6–1 to win the men's singles tennis title at the 1938 U.S. National Championships. He became the first player in tennis history to complete the Grand Slam.