The 1998 Chevrolet Cup was a men's ATP tennis tournament held in Santiago, Chile and played on outdoor clay courts that was part of the World Series of the 1998 ATP Tour. It was the sixth edition of the tournament and was held from 9 November to 16 November 1998. Francisco Clavet won the singles title.
See main article: 1998 Chevrolet Cup – Singles. Francisco Clavet defeated Younes El Aynaoui 6–2, 6–4
See main article: 1998 Chevrolet Cup – Doubles. Mariano Hood / Sebastián Prieto defeated Massimo Bertolini / Devin Bowen 7–6, 6–7, 7–6