2000 UBS Open Gstaad – Singles

Albert Costa was the defending champion, but lost in the semifinals to Mariano Puerta.

Àlex Corretja won the title, defeating Puerta in the final 6–1, 6–3.

Seeds
A champion seed is indicated in bold while text in italics indicates the round in which that seed was eliminated.

• # 🇪🇸 Àlex Corretja (champion)

• # 🇩🇪 Nicolas Kiefer (second round)

• # 🇪🇸 Juan Carlos Ferrero (first round)

• # 🇪🇸 Albert Costa (semifinals)

• # 🇲🇦 Younes El Aynaoui (first round)

• # 🇦🇷 Franco Squillari (quarterfinals, retired due to illness)

• # Marcelo Ríos (quarterfinals)

• # 🇦🇷 Mariano Puerta (final)