1990 Suntory Japan Open Tennis Championships
| 1990 Suntory Japan Open Tennis Championships | |
|---|---|
| Date | 9–15 April |
| Edition | 17th |
| Category | Championship Series (ATP) Tier IV (WTA) |
| Prize money | $825,000 (ATP) $150,000 (WTA) |
| Surface | Hard / outdoor |
| Location | Tokyo, Japan |
| Venue | Ariake Coliseum |
| Champions | |
| Men's singles | |
| Stefan Edberg | |
| Women's singles | |
| Catarina Lindqvist | |
| Men's doubles | |
| Mark Kratzmann / Wally Masur | |
| Women's doubles | |
| Kathy Jordan / Elizabeth Smylie | |
The 1990 Suntory Japan Open Tennis Championships was a combined men's and women's tennis tournament played on outdoor hard courts at the Ariake Coliseum in Tokyo, Japan that was part of the Championship Series of the 1990 ATP Tour and of Tier IV category of the 1990 WTA Tour. It was the 16th edition of the tournament and was held from 9 April through 15 April 1990. Second-seeded Stefan Edberg and first-seeded Catarina Lindqvist won the singles titles.