1910 U.S. National Championships
Date	August 15–25 (M) June 20–26 (W)
Edition	30th
Category	Grand Slam
Surface	Grass
Location	Newport, R.I., United States (M) Philadelphia, PA, United States (W)
Venue	Newport Casino (M) Philadelphia Cricket Club (W)
Champions
Men's singles
William Larned[1]
Women's singles
Hazel Hotchkiss[1]
Men's doubles
Fred Alexander / Harold Hackett[1]
Women's doubles
Hazel Hotchkiss / Edith Rotch[1]
Mixed doubles
Hazel Hotchkiss / Joseph Carpenter, Jr.[1]
← 1909 · U.S. National Championships · 1911 →

The 1910 U.S. National Championships (now known as the US Open) took place on the outdoor grass courts at the Newport Casino in Newport, United States. The men's singles tournament ran from August 15 until August 25 while the women's singles and doubles championship took place from June 20 to June 26 at the Philadelphia Cricket Club in Chestnut Hill. It was the 30th staging of the U.S. National Championships, and the third Grand Slam tennis event of the year.

Finals

Men's singles

William Larned (USA) defeated Tom Bundy (USA) 6–1, 5–7, 6–0, 6–8, 6–1

Women's singles

Hazel Hotchkiss (USA) defeated Louise Hammond (USA) 6–4, 6–2

Men's doubles

Fred Alexander (USA) / Harold Hackett (USA) defeated Tom Bundy (USA) / Trowridge Hendrick (USA) 6–1, 8–6, 6–3

Women's doubles

Hazel Hotchkiss (USA) / Edith Rotch (USA) defeated Adelaide Browning (USA) / Edna Wildey (USA) 6–4, 6–4

Mixed doubles

Hazel Hotchkiss (USA) / Joseph Carpenter, Jr. (USA) defeated Edna Wildey (USA) / Herbert M. Tilden (USA) 6–2, 6–2