Singles
2003 International Raiffeisen Grand Prix
Final
Champion	Andy Roddick
Runner-up	Nikolay Davydenko
Score	6–3, 6–2
Events
Singles Doubles
← 2002 · International Raiffeisen Grand Prix · 2004 →

Nicolás Lapentti was the defending champion but did not compete that year.

Andy Roddick won in the final 6–3, 6–2 against Nikolay Davydenko.

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

	First round							Second round							Quarterfinals							Semifinals							Final
	1	A Roddick	6	77
		A Martín	1	65				1	A Roddick	6	6
	Q	P Kohlschreiber	6	0	6			Q	P Kohlschreiber	3	4
	WC	J Melzer	4	6	2										1	A Roddick	7	6
		K Carlsen	5	7	3										WC	R Krajicek	5	1
		B Vahaly	7	5	6				B Vahaly	2	6	3
	WC	R Krajicek	7	3	6			WC	R Krajicek	6	2	6
	5	J-M Gambill	5	6	3																	1	A Roddick	6	2
	4	T Dent	6	63	4																	8	D Sánchez	2	0r
		M Ančić	2	77	6				M Ančić	6	7
		J-R Lisnard	6	6					J-R Lisnard	4	5
		M Kratochvil	3	4												M Ančić	1	4
		D Sanguinetti	7	77											8	D Sánchez	6	6
		S Sargsian	5	65					D Sanguinetti	4	4
	WC	M Hipfl	1	0				8	D Sánchez	6	6
	8	D Sánchez	6	6																									1	Andy Roddick	6	6
	7	K Kučera	2	1																									6	Nikolay Davydenko	3	2
		M Verkerk	6	6					M Verkerk	6	7
		D Hrbatý	6	7					D Hrbatý	4	5
		L Horna	3	5												M Verkerk	77	77
		F Saretta	6	6												F Saretta	64	62
		A Sá	2	2					F Saretta	6	6
	Q	I Labadze	6	4	6			Q	I Labadze	1	1
	LL	J Weinzierl	4	6	4																		M Verkerk	5	1
	6	N Davydenko	6	6																		6	N Davydenko	7	6
		K Beck	4	2				6	N Davydenko	6	6
	Q	H Armando	6	4	3				H-T Lee	4	3
		H-T Lee	4	6	6										6	N Davydenko	7	6
		O Mutis	3	1												A Dupuis	5	1
		A Dupuis	6	6					A Dupuis	6	2	6
	Q	N Zimonjić	77	1	3			2	A Costa	4	6	2
	2	A Costa	64	6	6

• 2003 International Raiffeisen Grand Prix Draw
• 2003 International Raiffeisen Grand Prix Qualifying Draw