The 1988 CA-TennisTrophy was a men's tennis tournament played on indoor carpet courts at the Wiener Stadthalle in Vienna, Austria that was part of the 1988 Nabisco Grand Prix.

It was the 14th edition of the tournament and ran from 17 October through 23 October 1988.

Unseeded Horst Skoff won the singles title.

Horst Skoff defeated Thomas Muster 4–6, 6–3, 6–4, 6–2 Alex Antonitsch / Balázs Taróczy defeated Kevin Curren / Tomáš Šmíd 4–6, 6–3, 7–6