1964 U.S. National Championships – Men's singles

First-seeded Roy Emerson defeated Fred Stolle 6–4, 6–1, 6–4 in the final to win the men's singles tennis title at the 1964 U.S. National Championships.

Seeds
The seeded players are listed below. Roy Emerson is the champion; others show the round in which they were eliminated.


 * 1) 🇦🇺 Roy Emerson (champion)
 * 2) 🇺🇸 Dennis Ralston (quarterfinals)
 * 3) 🇲🇽 Rafael Osuna (semifinals)
 * 4) 🇺🇸 Chuck McKinley (semifinals)
 * 5) 🇦🇺 Fred Stolle (finalist)
 * 6) 🇪🇸 Manuel Santana (second round)
 * 7) 🇮🇹 Nicola Pietrangeli (second round)
 * 8) 🇺🇸 Arthur Ashe (fourth round)

Key

 * Q = Qualifier
 * WC = Wild card
 * LL = Lucky loser
 * r = Retired