Lars Burgsmüller was the defending champion but lost in the second round to Olivier Rochus.
Karol Kučera won in the final 7–6(7–4), 6–4 against Rochus.
Seeds A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
Jarkko Nieminen (first round) Wayne Arthurs (semifinals) Karol Kučera (champion) Radek Štěpánek (semifinals) Kenneth Carlsen (first round) Martin Verkerk (first round) Mario Ančić (first round) Raemon Sluiter (first round)
Draw
External links 2003 Copenhagen Open draw 2003 Copenhagen Open Qualifying draw