1998 Campionati Internazionali di San Marino – Singles

The 1998 Campionati Internazionali di San Marino was a men's tennis tournament played on Clay in City of San Marino, San Marino that was part of the International Series of the 1998 ATP Tour. It was the tenth edition of the tournament and was held from 10 to 16 August 1998.

Seeds
Champion seeds are indicated in bold text while text in italics indicates the round in which those seeds were eliminated. • #🇮🇹 Andrea Gaudenzi (quarterfinals)

• #🇦🇺 Richard Fromberg (semifinals)

• #🇸🇰 Dominik Hrbatý (champion)

• #🇸🇪 Magnus Norman (first round)

• #🇧🇷 Fernando Meligeni (first round)

• #🇪🇸 Julián Alonso (first round)

• #🇪🇸 Carlos Costa (semifinals)

• #🇮🇹 Davide Sanguinetti (second roundturno)