The 1988 Citizen Cup was a women's tennis tournament played on outdoor clay courts at the Am Rothenbaum in Hamburg, West Germany and was part of the Category 3 tier of the 1988 WTA Tour. The tournament ran from July 25 through July 31, 1988. First-seeded Steffi Graf won the singles title, her second consecutive at the event, and earned $40,000 first-prize money.
Finals
Singles
Steffi Graf defeated Katerina Maleeva 6–4, 6–2
It was Graf's 7th singles title of the year and the 26th of her career.
Doubles
Jana Novotná / Tine Scheuer-Larsen defeated Andrea Betzner / Judith Wiesner 6–4, 6–2 It was Novotná's 3rd title of the year and the 6th of her career. It was Scheuer-Larsen's 2nd title of the year and the 4th of her career.