2001 Adidas International – Men's singles

Lleyton Hewitt was the defending champion and won in the final 6–4, 6–1 against Magnus Norman. Hewitt became only the second player in the history of the tournament who successfully defended the title, after Pete Sampras won both the 1993 and 1994 editions.

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


 * 1) 🇸🇪 Magnus Norman (final)
 * 2) 🇦🇺 Lleyton Hewitt (champion)
 * 3)  Wayne Ferreira (first round)
 * 4) 🇫🇷 Cédric Pioline (first round)
 * 5) 🇫🇷 Arnaud Clément (second round)
 * 6) 🇫🇷 Sébastien Grosjean (semifinals)
 * 7) 🇩🇪 Tommy Haas (second round)
 * 8) 🇲🇦 Younes El Aynaoui (first round)

Seeds

 * 1) 🇨🇿 Sláva Doseděl (moved to the main draw)
 * 2) 🇺🇸 Chris Woodruff (final round)
 * 3) 🇧🇪 Christophe Rochus (Qualifier)
 * 4) 🇪🇸 Alberto Martín (first round)
 * 5) 🇺🇸 Paul Goldstein (final round)
 * 6) 🇩🇪 Alexander Popp (first round)
 * 7) 🇪🇸 David Sánchez (second round)
 * 8)  Ivan Ljubičić (first round)

Qualifiers

 * 1)  George Bastl
 * 2) 🇦🇺 Scott Draper
 * 3) 🇧🇪 Christophe Rochus
 * 4) 🇺🇸 Jeff Tarango

Special exempts

 * 1) 🇨🇿 Bohdan Ulihrach (runner-up at Doha)
 * 2) 🇦🇺 Jason Stoltenberg (semifinalist at Adelaide)