1970 US Open – Men's singles
| Men's singles | |
|---|---|
| 1970 US Open | |
| Champion | Ken Rosewall |
| Runner-up | Tony Roche |
| Score | 2–6, 6–4, 7–6(5–2), 6–3 |
| Draw | 108 |
| Seeds | 20 |
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.