1981 US Open (tennis)
| 1981 US Open | |
|---|---|
| Date | September 1 – September 13 |
| Edition | 101st |
| Category | Grand Slam (ITF) |
| Surface | Hardcourt |
| Location | New York City, New York, United States |
| Champions | |
| Men's singles | |
 John McEnroe | |
| Women's singles | |
| Tracy Austin | |
| Men's doubles | |
| Peter Fleming / John McEnroe | |
| Women's doubles | |
| Anne Smith / Kathy Jordan | |
| Mixed doubles | |
Anne Smith /  Kevin Curren | |
| Boys' singles | |
 Thomas Högstedt | |
| Girls' singles | |
| Zina Garrison | |
The 1981 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 101st edition of the US Open and was held from September 1 to September 13, 1981.
Seniors
Men's Singles
John McEnroe defeated Björn Borg 4–6, 6–2, 6–4, 6–3
- It was McEnroe's 4th career Grand Slam title and his 3rd US Open title.
Women's Singles
Tracy Austin defeated Martina Navratilova 1–6, 7–6(7–4), 7–6(7–1)
- It was Austin's 2nd and last career Grand Slam title and her 2nd US Open title.
Men's Doubles
Peter Fleming / John McEnroe defeated 
Heinz Günthardt / 
Peter McNamara by Walkover
- It was Fleming's 4th career Grand Slam title and his 2nd US Open title. It was McEnroe's 9th career Grand Slam title and his 4th US Open title.
Women's Doubles
Kathy Jordan / Anne Smith defeated Rosemary Casals / Wendy Turnbull 6–3, 6–3
- It was Jordan's 3rd career Grand Slam title and her only US Open title. It was Smith's 4th career Grand Slam title and her 1st US Open title.
Mixed Doubles
Anne Smith / Kevin Curren defeated JoAnne Russell / Steve Denton 6–4, 7–6(7–4)
- It was Smith's 5th career Grand Slam title and her 2nd US Open title. It was Curren's 1st career Grand Slam title and his 1st US Open title.
Juniors
Boys' Singles
Thomas Högstedt defeated 
Hans Schwaier 7–5, 6–3
Girls' Singles
Zina Garrison defeated Kate Gompert 6–0, 6–3