1913 U.S. National Championships – Men's singles
| Men's singles | |
|---|---|
| 1913 U.S. National Championships | |
| Champion | Maurice McLoughlin |
| Runner-up | R. Norris Williams |
| Score | 6–4, 5–7, 6–3, 6–1 |
Maurice McLoughlin defeated R. Norris Williams 6–4, 5–7, 6–3, 6–1 in the final to win the men's singles tennis title at the 1913 U.S. National Championships. The event was held at the Newport Casino in Newport, R.I. in the United States. There were more than 128 players in the draw.