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.
See main article: 1991 US Open – Men's singles. Stefan Edberg defeated Jim Courier 6–2, 6–4, 6–0
See main article: 1991 US Open – Women's singles. Monica Seles defeated Martina Navratilova 7–6(7–1), 6–1
See main article: 1991 US Open – Men's doubles. John Fitzgerald / Anders Järryd defeated Scott Davis / David Pate 6–3, 3–6, 6–3, 6–3
See main article: 1991 US Open – Women's doubles. Pam Shriver / Natasha Zvereva defeated Jana Novotná / Larisa Savchenko 6–4, 4–6, 7–6(7–5)
See main article: 1991 US Open – Mixed doubles. Manon Bollegraf / Tom Nijssen defeated Arantxa Sánchez Vicario / Emilio Sánchez 6–2, 7–6(7–2)
Leander Paes defeated Karim Alami 6–4, 6–4
Karina Habšudová defeated Anne Mall 6–1, 6–3
Karim Alami / John-Laffnie de Jager defeated Michael Joyce / Vince Spadea 6–4, 6–7, 6–1
Kristin Godridge / Nicole Pratt defeated Åsa Carlsson / Cătălina Cristea 7–6, 7–5