2001 Hamlet Cup
| 2001 Hamlet Cup | |
|---|---|
| Date | August 20 – August 26 |
| Edition | 21st |
| Category | International Series |
| Surface | Hard / Outdoor |
| Location | Commack, New York, USA |
| Champions | |
| Singles | |
 Tommy Haas | |
| Doubles | |
 Jonathan Stark /  Kevin Ullyett | |
The 2001 Hamlet Cup was a men tennis tournament played on outdoor hard courts at the Hamlet Golf and Country Club in Commack, New York in the United States and was part of the International Series of the 2001 ATP Tour. It was the 21st edition of the tournament and ran from August 20 through August 26, 2001. Tommy Haas won the singles title.
Champions
Men's Singles
Tommy Haas defeated Pete Sampras 6–3, 3–6, 6–2
- It was Haas' 2nd title of the year and the 3rd of his career.
Men's Doubles
Jonathan Stark / Kevin Ullyett defeated 
Leoš Friedl / Radek Štěpánek 6–1, 6–4
- It was Stark's only title of the year and the 21st of his career. It was Ullyett's 2nd title of the year and the 12th of his career.