| 2001 AIG Japan Open Tennis Championships | |
|---|---|
| Date | 1–7 October |
| Edition | 28th |
| Surface | Hard / outdoor |
| Location | Tokyo, Japan |
| Venue | Ariake Coliseum |
| Champions | |
| Men's singles | |
 Lleyton Hewitt[1] | |
| Women's singles | |
 Monica Seles | |
| Men's doubles | |
| Rick Leach / David Macpherson[2] | |
| Women's doubles | |
 Liezel Huber / Rachel McQuillan | |
The 2001 AIG Japan Open Tennis Championships was a tennis tournament played on outdoor hard courts at the Ariake Coliseum in Tokyo in Japan that was part of the International Series Gold of the 2001 ATP Tour and of Tier III of the 2001 WTA Tour. The tournament ran from October 1 through October 7, 2001. Lleyton Hewitt and Monica Seles won the singles titles.
- ^ "2001 Tokyo – Men's singles draw". Association of Tennis Professionals (ATP).
- ^ "2001 Tokyo – Men's doubles draw". Association of Tennis Professionals (ATP).