The 1986 CA-TennisTrophy was a men's tennis tournament played on indoor hard courts at the Wiener Stadthalle in Vienna, Austria that was part of the 1986 Nabisco Grand Prix.

The tournament ran from 20 October until 27 October 1986.

First-seeded Brad Gilbert won the singles title.

Brad Gilbert defeated Karel Nováček 3–6, 6–3, 7–5, 6–0 Ricardo Acioly' / Wojciech Fibak defeated Brad Gilbert / Slobodan Živojinović by walkover