1970 US Open – Men's singles

Men's singles
1970 US Open
Champion Ken Rosewall
Runner-up Tony Roche
Score2–6, 6–4, 7–6(5–2), 6–3
Draw108
Seeds20

Ken Rosewall defeated Tony Roche in the final, 2–6, 6–4, 7–6(5–2), 6–3 to win the men's singles tennis title at the 1970 US Open. It was his second US singles title and seventh Grand Slam tournament singles title overall.

Rod Laver was the defending champion, but lost in the fourth round to Dennis Ralston.