The 1998 WTA German Open was a women's tennis tournament played on outdoor clay courts at the Rot-Weiss Tennis Club in Berlin in Germany that was part of Tier I of the 1998 WTA Tour. It was the 29th edition of the tournament and was held from 11 May through 17 May 1998. Conchita Martínez won the singles title.
| 1998 WTA German Open | |
|---|---|
| Date | 11–17 May |
| Edition | 29th |
| Category | Tier I |
| Draw | 56S / 28D |
| Surface | Clay / outdoor |
| Location | Berlin, Germany |
| Venue | Rot-Weiss Tennis Club |
| Champions | |
| Singles | |
 Conchita Martínez | |
| Doubles | |
 Lindsay Davenport /  Natasha Zvereva | |
Finals edit
Singles edit
Conchita Martínez defeated 
Amélie Mauresmo 6–4, 6–4
- It was Martínez's 2nd title of the year and the 35th of her career.
Doubles edit
Lindsay Davenport / Natasha Zvereva defeated Alexandra Fusai / Nathalie Tauziat 6–3, 6–0
- It was Davenport's 3rd title of the year and the 34th of her career. It was Zvereva's 2nd title of the year and the 75th of her career.