| 1999 WTA German Open | |
|---|---|
| Date | 10 – 16 May |
| Edition | 30th |
| Category | Tier I |
| Draw | 56S / 28D |
| Prize money | $150,000 |
| Surface | Clay / outdoor |
| Location | Berlin, Germany |
| Venue | Rot-Weiss Tennis Club |
| Champions | |
| Singles | |
 Martina Hingis | |
| Doubles | |
 Alexandra Fusai / Nathalie Tauziat | |
The 1999 German Open was a women's tennis event that was played in Berlin, Germany from 10 May to 16 May 1999. It was one of two Tier I events that took place on red clay in the build-up to the second Grand Slam of the year, the French Open. First-seeded Martina Hingis won the singles title and earned $150,000 first-prize money.