2001 Gerry Weber Open
| 2001 Gerry Weber Open | |
|---|---|
| Date | 11–17 June |
| Edition | 9th |
| Category | International Series |
| Surface | Grass / Outdoor |
| Location | Halle, Germany |
| Venue | Gerry Weber Stadion |
| Champions | |
| Singles | |
 Thomas Johansson | |
| Doubles | |
 Daniel Nestor /  Sandon Stolle | |
The 2001 Gerry Weber Open was a men's tennis tournament played on grass courts at the Gerry Weber Stadion in Halle, North Rhine-Westphalia in Germany and was part of the International Series of the 2001 ATP Tour. It was the ninth edition of the tournament and took place from 11 June through 17 June 2001. Thomas Johansson won the singles title.
Finals
Singles
Thomas Johansson defeated 
Fabrice Santoro 6–3, 6–7(5–7), 6–2
- It was Johansson's 1st title of the year and the 5th of his career.
Doubles
Daniel Nestor / Sandon Stolle defeated 
Max Mirnyi / Patrick Rafter 6–4, 6–7(5–7), 6–1
- It was Nestor's 3rd title of the year and the 19th of his career. It was Stolle's 3rd title of the year and the 19th of his career.