The 1990 Swedish Open was a combined men's and women's tennis tournament played on outdoor clay courts in Båstad, Sweden. It was part of the World Series of the 1990 ATP Tour and of the Tier V category of the 1990 WTA Tour. It was the 43rd edition of the tournament and was held from 9 July until 15 July 1990. Richard Fromberg and Sandra Cecchini won the singles titles.
| 1990 Swedish Open | |
|---|---|
| Date | 9–15 July |
| Edition | 43rd |
| Category | World Series (M) Tier V (W) |
| Draw | 32S / 16D |
| Prize money | $225,000 (M) $75,000 (W) |
| Surface | Clay / outdoor |
| Location | Båstad, Sweden |
| Champions | |
| Men's singles | |
 Richard Fromberg[1] | |
| Women's singles | |
 Sandra Cecchini | |
| Men's doubles | |
 Ronnie Båthman / Rikard Bergh[2] | |
| Women's doubles | |
 Mercedes Paz /  Tine Scheuer-Larsen | |
Finals
editMen's singles
edit Richard Fromberg defeated Magnus Larsson, 6–2, 7–6
- It was Fromberg's 2nd singles title of the year and of his career.
Women's singles
edit Sandra Cecchini defeated 
Csilla Bartos, 6–1, 6–2
Men's doubles
edit Ronnie Båthman / Rikard Bergh defeated Jan Gunnarsson / 
Udo Riglewski, 6–1, 6–4
Women's doubles
edit Mercedes Paz / Tine Scheuer-Larsen defeated 
Carin Bakkum / Nicole Muns-Jagerman 6–3, 6–7(10–12), 6–2