1991 US Open
Date	August 26 – September 8
Edition	111th
Category	Grand Slam (ITF)
Surface	Hardcourt
Location	New York City, New York, United States
Champions
Men's singles
Stefan Edberg
Women's singles
Monica Seles
Men's doubles
John Fitzgerald / Anders Järryd
Women's doubles
Pam Shriver / Natasha Zvereva
Mixed doubles
Manon Bollegraf / Tom Nijssen
Boys' singles
Leander Paes
Girls' singles
Karina Habšudová
Boys' doubles
Karim Alami / John-Laffnie de Jager
Girls' doubles
Kristin Godridge / Nicole Pratt
← 1990 · US Open · 1992 →

The 1991 US Open was a tennis tournament played on outdoor hard courts at the USTA National Tennis Center in New York City in New York in the United States. It was the 111th edition of the US Open and was held from August 26 to September 8, 1991.

Seniors

Men's singles

Stefan Edberg defeated Jim Courier 6–2, 6–4, 6–0

• It was Edberg's 5th career Grand Slam title and his 1st US Open title.

Women's singles

Monica Seles defeated Martina Navratilova 7–6^(7–1), 6–1

• It was Seles' 4th career Grand Slam title and her 1st US Open title.

Men's doubles

John Fitzgerald / Anders Järryd defeated Scott Davis / David Pate 6–3, 3–6, 6–3, 6–3

• It was Fitzgerald's 9th and last career Grand Slam title and his 3rd US Open title. It was Järryd's 8th and last career Grand Slam title and his 2nd US Open title.

Women's doubles

Pam Shriver / Natasha Zvereva defeated Jana Novotná / Larisa Savchenko 6–4, 4–6, 7–6^(7–5)

• It was Shriver's 22nd and last career Grand Slam title and her 5th US Open title. It was Zvereva's 4th career Grand Slam title and her 1st US Open title.

Mixed doubles

Manon Bollegraf / Tom Nijssen defeated Arantxa Sánchez Vicario / Emilio Sánchez 6–2, 7–6^(7–2)

• It was Bollegraf's 2nd career Grand Slam title and her 1st US Open title. It was Nijssen's 2nd and last career Grand Slam title and his only US Open title.

Juniors

Boys' singles

Leander Paes defeated Karim Alami 6–4, 6–4

Girls' singles

Karina Habšudová defeated Anne Mall 6–1, 6–3

Boys' doubles

Karim Alami / John-Laffnie de Jager defeated Michael Joyce / Vince Spadea 6–4, 6–7, 6–1

Girls' doubles

Kristin Godridge / Nicole Pratt defeated Åsa Carlsson / Cătălina Cristea 7–6, 7–5