1983 Geneva Open – Singles

Mats Wilander was the defending champion.

Wilander successfully defended his title, defeating Henrik Sundström 3–6, 6–1, 6–3 in the final.

Seeds

 * 1) 🇸🇪 Mats Wilander (champion)
 * 2) 🇦🇷 Guillermo Vilas (semifinals)
 * 3) 🇸🇪 Henrik Sundström (final)
 * 4)  Tomáš Šmíd (first round)
 * 5)  Heinz Günthardt (quarterfinals)
 * 6) 🇸🇪 Anders Järryd (semifinals)
 * 7) 🇭🇺 Balázs Taróczy (second round)
 * 8) 🇺🇸 Jimmy Brown (second round)