2003 Italian Open – Men's singles


Félix Mantilla defeated Roger Federer in the final, 7-5, 6-2, 7-6 to win the men's singles tennis title at the 2003 Italian Open.
Andre Agassi was the defending champion, but lost in the first round to David Ferrer.

Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
  1. Andre Agassi '
  2. Juan Carlos Ferrero '
  3. Carlos Moyá '
  4. Roger Federer '
  5. Andy Roddick '
  6. Marat Safin '
  7. Albert Costa '
  8. Jiří Novák '
  9. Paradorn Srichaphan '
  10. Sjeng Schalken '
  11. David Nalbandian '
  12. Rainer Schüttler '
  13. Sébastien Grosjean '
  14. Gustavo Kuerten '
  15. Guillermo Coria
  16. Younes El Aynaoui ''''