| 2001 Estoril Open | |
|---|---|
| Date | 9–15 April |
| Edition | 12th(ATP) / 5th(WTA) |
| Surface | Clay / outdoor |
| Location | Oeiras, Portugal |
| Champions | |
| Men's singles | |
 Juan Carlos Ferrero | |
| Women's singles | |
| Ángeles Montolio | |
| Men's doubles | |
 Radek Štěpánek / Michal Tabara | |
| Women's doubles | |
Květa Hrdličková /  Barbara Rittner | |
The 2001 Estoril Open was a tennis tournament played on outdoor clay courts at the Estoril Court Central in Oeiras in Portugal and was part of the International Series of the 2001 ATP Tour and of Tier IV of the 2001 WTA Tour. The tournament ran from 9 April until 15 April 2001. Juan Carlos Ferrero and Ángeles Montolio won the singles titles.