| 2005 AIG Japan Open Tennis Championships | |
|---|---|
| Date | 3–9 October |
| Edition | 32nd |
| Surface | Hard / outdoor |
| Location | Tokyo, Japan |
| Venue | Ariake Coliseum |
| Champions | |
| Men's singles | |
 Wesley Moodie[1] | |
| Women's singles | |
 Nicole Vaidišová | |
| Men's doubles | |
 Satoshi Iwabuchi / Takao Suzuki[2] | |
| Women's doubles | |
 Gisela Dulko /  Maria Kirilenko | |
The 2005 AIG Japan Open Tennis Championships was a tennis tournament played on outdoor hard courts. It was the 32nd edition of the event known that year as the AIG Japan Open Tennis Championships, and was part of the International Series Gold of the 2005 ATP Tour, and of the Tier III Series of the 2005 WTA Tour. Both the men's and the women's events took place at the Ariake Coliseum in Tokyo, Japan, from 3 October through 9 October 2005. Wesley Moodie and Nicole Vaidišová won the singles titles.
- ^ "2005 Tokyo Men's Singles draw". www.atpworldtour.com. Association of Tennis Professionals (ATP).
- ^ "2005 Tokyo Men's Doubles draw". www.atpworldtour.com. Association of Tennis Professionals (ATP).