2003 US Open
Date	August 25 - September 7
Edition	123rd
Category	Grand Slam (ITF)
Surface	Hardcourt
Location	New York City, U.S.
Venue	USTA Billie Jean King National Tennis Center
Champions
Men's singles
Andy Roddick
Women's singles
Justine Henin-Hardenne
Men's doubles
Jonas Björkman / Todd Woodbridge
Women's doubles
Virginia Ruano Pascual / Paola Suárez
Mixed doubles
Bob Bryan / Katarina Srebotnik
Boys' singles
Jo-Wilfried Tsonga
Girls' singles
Kirsten Flipkens
← 2002 · US Open · 2004 →

The 2003 US Open was held between August 25 – September 7, 2003.

Both Pete Sampras and Serena Williams did not defend their titles from 2002; Sampras unofficially retired^{[clarification needed]} after winning his final Grand Slam title the previous year, and Serena Williams was forced to miss the tournament after withdrawing through injury. This was the first time since 1971 in which neither champion was able to defend their title.^[1]

Andy Roddick, who previously won the 2000 US Open as a junior, won his only Grand Slam title, defeating Juan Carlos Ferrero (who inherited the World No.1 ranking after the tournament) in the final. Justine Henin-Hardenne won her first US Open title and second Grand Slam title, defeating her compatriot, rival and future three-times US Open champion Kim Clijsters in the final, dropping only one set through her run.

Seniors

Men's singles

Andy Roddick defeated Juan Carlos Ferrero, 6–3, 7–6^(7–2), 6–3

• It was Roddick's 1st and only career Grand Slam singles title. It was Roddick's 6th title of the year, and his 11th overall.

Women's singles

Justine Henin-Hardenne defeated Kim Clijsters, 7–5, 6–1

• It was Henin-Hardenne's 2nd career Grand Slam singles title and her 1st title at the US Open. It was Henin-Hardenne's 7th title of the year, and her 13th overall. She became the first Belgian tennis player to win the US Open singles crown.

Men's doubles

Jonas Björkman / Todd Woodbridge defeated Mike Bryan / Bob Bryan, 5–7, 6–0, 7–5

• It was Björkman's 6th career Grand Slam doubles title and his 1st and only title at the US Open.

• It was Woodbridge's 15th career Grand Slam doubles title and his 3rd and last title at the US Open.

Women's doubles

Virginia Ruano Pascual / Paola Suárez defeated Svetlana Kuznetsova / Martina Navratilova, 6–2, 6–2

• It was Ruano Pascual's 4th career Grand Slam doubles title and her 2nd title at the US Open.

• It was Suárez' 4th career Grand Slam doubles title and her 2nd title at the US Open.

Mixed doubles

Katarina Srebotnik / Bob Bryan defeated Lina Krasnoroutskaya / Daniel Nestor, 5–7, 7–5, 7–6^(7–5)

• It was Srebotnik's 2nd career Grand Slam mixed doubles title and her 1st and only title at the US Open.

• It was Bryan's 1st career Grand Slam mixed doubles title.

Juniors

Boys' singles

Jo-Wilfried Tsonga defeated Marcos Baghdatis, 7–6, 6–3

Girls' singles

Kirsten Flipkens defeated Michaëlla Krajicek, 6–3, 7–5

Boys' doubles

Not played due to inclement weather.

Girls' doubles

Not played due to inclement weather.