1985 US Open (tennis)
| 1985 US Open | |
|---|---|
| Date | August 27 – September 8 |
| Edition | 105th |
| Category | Grand Slam (ITF) |
| Surface | Hardcourt |
| Location | New York City, New York, United States |
| Champions | |
| Men's singles | |
 Ivan Lendl | |
| Women's singles | |
| Hana Mandlíková | |
| Men's doubles | |
 Ken Flach / Robert Seguso | |
| Women's doubles | |
 Claudia Kohde-Kilsch / Helena Suková | |
| Mixed doubles | |
Martina Navratilova / .svg.png){kind=small} Heinz Günthardt | |
| Boys' singles | |
| Tim Trigueiro | |
| Girls' singles | |
 Laura Garrone | |
| Boys' doubles | |
| Joey Blake / Darren Yates | |
| Girls' doubles | |
| Andrea Holíková / Radka Zrubáková | |
The 1985 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 105th edition of the US Open and was held from August 27 to September 8, 1985.
Seniors
Men's singles
Ivan Lendl defeated John McEnroe 7–6(7–1), 6–3, 6–4
- It was Lendl's 2nd career Grand Slam title and his 1st US Open title.
Women's singles
Hana Mandlíková defeated Martina Navratilova 7–6(7–3), 1–6, 7–6(7–2)
- It was Mandlíková's 3rd career Grand Slam title and her 1st US Open title.
Men's doubles
Ken Flach / Robert Seguso defeated 
Henri Leconte / Yannick Noah 6–7(5–7), 7–6(7–1), 7–6(8–6), 6–0
- It was Flach's 1st career Grand Slam title and his 1st US Open title. It was Seguso's 1st career Grand Slam title and his only US Open title.
Women's doubles
Claudia Kohde-Kilsch / Helena Suková defeated Martina Navratilova / Pam Shriver 6–7(5–7), 6–2, 6–3
- It was Kohde-Kilsch's 1st career Grand Slam title and her only US Open title. It was Suková's 1st career Grand Slam title and her 1st US Open title.
Mixed doubles
Martina Navratilova / Heinz Günthardt defeated .svg.png){kind=small}
Elizabeth Smylie / John Fitzgerald 6–3, 6–4
- It was Navratilova's 35th career Grand Slam title and her 8th US Open title. It was Günthardt's 4th and last career Grand Slam title and his only US Open title.
Juniors
Boys' singles
Tim Trigueiro defeated Joey Blake 6–2, 6–3
Girls' singles
Laura Garrone defeated Andrea Holíková 6–2, 7–6
Boys' doubles
Joey Blake / Darren Yates defeated Patrick Flynn / David Macpherson 3–6, 6–3, 6–4
Girls' doubles
Andrea Holíková / Radka Zrubáková defeated 
Mariana Perez-Roldan / Patricia Tarabini 6–4, 2–6, 7–5