List of champions of the 1901 U.S. National Championships tennis tournament (now known as the US Open). The men's tournament was held from August 19 to August 27 on the outdoor grass courts at the Newport Casino in Newport, Rhode Island. The women's tournament was held from June 25 to June 29 on the outdoor grass courts at the Philadelphia Cricket Club in Philadelphia, Pennsylvania. It was the 21st U.S. National Championships and the second Grand Slam tournament of the year.

Finals

Men's singles

🇺🇸 William Larned defeated 🇺🇸 Beals Wright 6–2, 6–8, 6–4, 6–4

Women's singles

🇺🇸 Elisabeth Moore defeated 🇺🇸 Myrtle McAteer 6–4, 3–6, 7–5, 2–6, 6–2

Men's doubles

🇺🇸 Holcombe Ward / 🇺🇸 Dwight Davis defeated 🇺🇸 Leo Ware / 🇺🇸 Beals Wright 6–3, 9–7, 6–11

Women's doubles

🇺🇸 Juliette Atkinson / 🇺🇸 Myrtle McAteer defeated 🇺🇸 Marion Jones / 🇺🇸 Elisabeth Moore default

Mixed doubles

🇺🇸 Marion Jones / 🇺🇸 Raymond Little defeated 🇺🇸 Myrtle McAteer / 🇺🇸 Clyde Stevens 6–4, 6–4, 7–5