1986 Geneva Open – Singles

Tomáš Šmíd was the defending champion but did not participate this year.

Henri Leconte won the title, defeating Thierry Tulasne 7–5, 6–3 in the final.

Seeds

 * 1) 🇫🇷 Henri Leconte (champion)
 * 2) 🇫🇷 Thierry Tulasne (final)
 * 3) 🇦🇷 Horacio de la Peña (first round)
 * 4) 🇪🇸 Fernando Luna (quarterfinals)
 * 5) 🇵🇪 Pablo Arraya (first round)
 * 6)  Ronald Agénor (first round)
 * 7)  Michiel Schapers (first round)
 * 8) 🇺🇸 Mel Purcell (second round)