The 1986 Geneva Open was a men's tennis tournament played on outdoor clay courts that was part of the 1986 Nabisco Grand Prix.

It was the seventh edition of the tournament and was played at Geneva in Switzerland from 8 September through 15 September 1986.

First-seeded Henri Leconte won the singles title.

Henri Leconte defeated Thierry Tulasne 7–5, 6–3 Andreas Maurer / Jörgen Windahl defeated Gustavo Luza / Gustavo Tiberti 6–4, 3–6, 6–4