1998 Grand Prix de Tennis de Toulouse – Singles

The 1998 Grand Prix de Tennis de Toulouse was a men's tennis tournament played on indoor hard in Toulouse, France that was part of the International Series of the 1998 ATP Tour. It was the seventeenth edition of the tournament and was held from 28 September – 4 October.

Nicolas Kiefer was the defending champion, but lost in the semifinals to Greg Rusedski.

Jan Siemerink won the title by defeating Greg Rusedski 6–4, 6–4 in the final.

This tournament was notable for being where future 20-time Grand Slam champion and world No. 1 Roger Federer recorded his first match win.

Seeds
Champion seeds are indicated in bold text while text in italics indicates the round in which those seeds were eliminated. • #🇬🇧 Greg Rusedski (final)

• #🇳🇱 Jan Siemerink (champion)

• #🇸🇪 Thomas Johansson (semifinals)

• #🇩🇪 Nicolas Kiefer (semifinals)

• #🇫🇷 Fabrice Santoro (first round)

• #🇸🇪 Magnus Larsson (first round)

• #🇦🇺 Richard Fromberg (second round)

• #Unknown (withdrew)

Qualifying seeds
All seeds receive a bye into the second round. • # 🇩🇪 Martin Sinner (qualifying competition, lucky loser)

• # Ivo Heuberger (qualifying competition, lucky loser)

• # 🇩🇪 Alex Rădulescu (second round)

• # 🇨🇿 Petr Luxa (qualifying competition)

• # Nenad Zimonjić (second round)

• # 🇫🇷 Olivier Delaître (qualifying competition)

• # 🇫🇷 Régis Lavergne (second round)

• # 🇫🇷 Julien Boutter (qualified)

Qualifiers
• # 🇫🇷 Julien Boutter

• # 🇫🇷 Stéphane Huet

• # Roger Federer

• # 🇫🇷 Lionel Barthez

Lucky losers
• # 🇩🇪 Martin Sinner

• # Ivo Heuberger