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
← 2000 · US Open · 2002 →

The 2001 US Open was held between August 27 – September 9, 2001. It was the final Grand Slam event of 2001.

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

Men's singles

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

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

Wayne Black / Kevin Ullyett defeated Donald Johnson / Jared Palmer, 7–6, 2–6, 6–3

Women's doubles

Lisa Raymond / Rennae Stubbs defeated Kimberly Po / Nathalie Tauziat, 6–2, 5–7, 7–5

Mixed doubles

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

Boys' singles

Gilles Müller defeated Yeu-Tzuoo Wang, 7–6(5), 6–2.

Girls' singles

Marion Bartoli defeated Svetlana Kuznetsova,^[a] 4–6, 6–3, 6–4.

Boys' doubles

Tomáš Berdych / Stéphane Bohli defeated Brendan Evans / Brett Joelson, 6–4, 6–4.

Girls' doubles

Galina Fokina / Svetlana Kuznetsova^[a] defeated Jelena Janković^[b] / Matea Mezak, 7–5, 6–3.