The 1989 Lufthansa Cup was a women's tennis tournament played on outdoor clay courts at the Rot-Weiss Tennis Club in West Berlin that was part of Tier I of the 1989 WTA Tour. It was the 18th edition of the tournament and was held from May 15 through May 21, 1989.
Steffi Graf defeated Gabriela Sabatini 6–3, 6–1
- It was Graf's 7th title of the year and the 45th of her career.
Elizabeth Smylie / Janine Tremelling defeated Lise Gregory / Gretchen Magers 5–7, 6–3, 6–2
- It was Smylie's 5th title of the year and the 26th of her career. It was Tremelling's 3rd title of the year and the 5th of her career.