The 2001 US Open was held between August 27 – September 9, 2001. It was the final Grand Slam event of 2001.
| 2001 US Open | |
|---|---|
| Date | August 27 – September 9 |
| Edition | 121st |
| Category | Grand Slam (ITF) |
| Surface | Hardcourt |
| Location | New York City, U.S. |
| Champions | |
| Men's singles | |
 Lleyton Hewitt | |
| Women's singles | |
 Venus Williams | |
| Men's doubles | |
 Wayne Black / Kevin Ullyett | |
| Women's doubles | |
| Lisa Raymond / Rennae Stubbs | |
| Mixed doubles | |
| Todd Woodbridge / Rennae Stubbs | |
| Boys' singles | |
 Gilles Müller | |
| Girls' singles | |
 Marion Bartoli | |
| Boys' doubles | |
 Tomáš Berdych /  Stéphane Bohli | |
| Girls' doubles | |
 Galina Fokina / Svetlana Kuznetsova | |
Marat Safin was unsuccessful in his title defence, being defeated in the semifinals by Pete Sampras in a rematch of the 2000 final, while Venus Williams was successful in her title defense, beating her sister Serena in the women's final. 20-year-old Australian Lleyton Hewitt won the men's title, defeating Sampras in the final. It was the second consecutive US Open final defeat for Sampras.
Seniors
editMen's singles
edit Lleyton Hewitt defeated Pete Sampras, 7–6(7–4), 6–1, 6–1
- It was Hewitt's 8th title of the year, and his 10th overall. It was his first career Grand Slam title, and he became the youngest male ever to be ranked number one, at the age of 20.
Women's singles
edit Venus Williams defeated Serena Williams, 6–2, 6–4
- It was Venus's 6th title of the year, and her 21st overall. It was her 4th career Grand Slam title, and her 2nd US Open title.
Men's doubles
edit Wayne Black / Kevin Ullyett defeated Donald Johnson / Jared Palmer, 7–6, 2–6, 6–3
Women's doubles
edit Lisa Raymond / Rennae Stubbs defeated Kimberly Po / Nathalie Tauziat, 6–2, 5–7, 7–5
Mixed doubles
edit Rennae Stubbs / Todd Woodbridge defeated Lisa Raymond / 
Leander Paes, 6–4, 5–7, [11–9]
- • It was Stubbs' 2nd and last career Grand Slam mixed doubles title and her 1st and only title at the US Open.
- • It was Woodbridge's 7th and last career Grand Slam mixed doubles title and his 3rd title at the US Open.
Juniors
editBoys' singles
edit Gilles Müller defeated 
Yeu-Tzuoo Wang, 7–6(5), 6–2.
Girls' singles
edit Marion Bartoli defeated Svetlana Kuznetsova,[a] 4–6, 6–3, 6–4.
Boys' doubles
edit Tomáš Berdych / Stéphane Bohli defeated Brendan Evans / Brett Joelson, 6–4, 6–4.
Girls' doubles
edit Galina Fokina / Svetlana Kuznetsova[a] defeated 
Jelena Janković[b] / 
Matea Mezak, 7–5, 6–3.