1998 Davidoff Swiss Indoors – Singles

Greg Rusedski was the defending champion, but lost in the second round to David Prinosil.

Tim Henman won the title, defeating Andre Agassi 6–4, 6–3, 3–6, 6–4 in the final.

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

• #🇺🇸 Pete Sampras (first round)

• #🇦🇺 Patrick Rafter (first round)

• #🇨🇿 Petr Korda (first round)

• #🇺🇸 Andre Agassi (final)

• #🇷🇺 Yevgeny Kafelnikov (second round)

• #🇬🇧 Tim Henman (champion)

• #🇬🇧 Greg Rusedski (second round)

• # Jan Siemerink (first round)