| 1986 US Open | |
|---|---|
| Date | August 26 – September 7 | 
| Edition | 106th | 
| Category | Grand Slam (ITF) | 
| Surface | Hardcourt | 
| Location | New York City, New York, United States | 
| Champions | |
| Men's singles | |
| Women's singles | |
| Men's doubles | |
| Women's doubles | |
| Mixed doubles | |
| Boys' singles | |
| Girls' singles | |
| Boys' doubles | |
| Girls' doubles | |
The 1986 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 106th edition of the US Open and was held from August 26 to September 7, 1986.
Seniors
Men's singles
 Ivan Lendl defeated 
 Miloslav Mečíř 6–4, 6–2, 6–0
- It was Lendl's 4th career Grand Slam title and his 2nd US Open title.
 
Women's singles
 Martina Navratilova defeated 
 Helena Suková 6–3, 6–2
- It was Navratilova's 41st career Grand Slam title and her 3rd US Open singles title.
 
Men's doubles
 Andrés Gómez / 
 Slobodan Živojinović defeated 
 Joakim Nyström / 
 Mats Wilander 4–6, 6–3, 6–3, 4–6, 6–3
- It was Gómez's 1st career Grand Slam title and his only US Open title. It was Živojinović's only career Grand Slam title.
 
Women's doubles
 Martina Navratilova / 
 Pam Shriver defeated 
 Hana Mandlíková / 
 Wendy Turnbull 6–4, 3–6, 6–3
- It was Navratilova's 42nd career Grand Slam title and her 10th US Open title. It was Shriver's 14th career Grand Slam title and her 3rd US Open title.
 
Mixed doubles
 Raffaella Reggi / 
 Sergio Casal defeated 
 Martina Navratilova / 
 Peter Fleming 6–4, 6–4
- It was Reggi's only career Grand Slam title. It was Casal's 1st career Grand Slam title and his 1st US Open title.
 
Juniors
Boys' singles
 Javier Sánchez defeated 
 Franco Davín 6–2, 6–2
Girls' singles
 Elly Hakami defeated 
 Shaun Stafford 6–2, 6–1
Boys' doubles
 Tomás Carbonell / 
 Javier Sánchez defeated 
 Jeff Tarango / 
 David Wheaton 6–4, 1–6, 6–1
Girls' doubles
 Jana Novotná / 
 Radka Zrubáková defeated 
 Elena Brioukhovets / 
 Leila Meskhi 6–4, 6–2