The 1985 Fischer-Grand Prix was a men's tennis tournament played on indoor hard courts at the Wiener Stadthalle in Vienna in Austria that was part of the 1985 Nabisco Grand Prix.

It was the tenth edition of the tournament and took place from 18 November until 25 November 1985.

Jan Gunnarsson won the singles title.

Jan Gunnarsson defeated Libor Pimek 6–7, 6–2, 6–4, 1–6, 7–5 Mike De Palmer / Gary Donnelly defeated Sergio Casal / Emilio Sánchez 6–4, 6–3