Singles
1998 International Raiffeisen Grand Prix
Final
Champion	Marcelo Ríos[1]
Runner-up	Vincent Spadea
Score	6–2, 6–0
Events
Singles men women Doubles men women
← 1997 · International Raiffeisen Grand Prix · 1999 →

The 1998 International Raiffeisen Grand Prix was a men's tennis tournament played on Clay in St. Pölten, Austria that was part of the International Series of the 1998 ATP Tour. It was the eighteenth edition of the tournament and was held from 18–24 May 1998.

Champion seeds are indicated in bold text while text in italics indicates the round in which those seeds were eliminated.

	Semifinals							Final[1]
	1	Marcelo Ríos	6	6
	4	Andrea Gaudenzi	4	3
								1	Marcelo Ríos	6	6
									Vince Spadea	2	0
		Marcelo Filippini	2	0
		Vince Spadea	6	6

	First round							Second round							Quarterfinals							Semifinals
	1	M Ríos	6	6
		S Draper	1	3				1	M Ríos	6	6
		M-K Goellner	3	7	6				M-K Goellner	4	3
		W Black	6	63	1										1	M Ríos	6	6
		T Nydahl	6	5	6										7	G Blanco	2	2
		Á Calatrava	4	7	2				T Nydahl	3	5
	7	G Blanco	6	7				7	G Blanco	6	7
		M Meneschincheri	3	63																		1	M Ríos	6	6
	4	A Gaudenzi	6	7																		4	A Gaudenzi	4	3
		J-M Gambill	3	5				4	A Gaudenzi	6	4	6
		D Nargiso	6	6					D Nargiso	2	6	3
		H Gumy	4	2											4	A Gaudenzi	6	6
		J Sánchez	6	6											6	F Clavet	3	4
		G Pozzi	2	3					J Sánchez	7	5	0
	6	F Clavet	6	6				6	F Clavet	6	7	6
		S Campbell	3	1

	First round							Second round							Quarterfinals							Semifinals
		M Filippini	6	6
	5	G Raoux	2	2					M Filippini	7	6
		Ó Serrano	6	6					Ó Serrano	64	3
		M Hipfl	4	3												M Filippini	6	6
		JA Marín	7	6											3	T Muster	3	4
		N Lapentti	5	3					JA Marín	3	7	2
	3	T Muster	4	6	7			3	T Muster	6	64	6
		C Trimmel	6	1	5																		M Filippini	2	0
	8	R Fromberg	63	7	6																		V Spadea	6	6
		G Stafford	7	61	1			8	R Fromberg	6	3	3
		V Spadea	7	7					V Spadea	4	6	6
		K Carlsen	5	5												V Spadea	7	6
		S Schalken	6	6												S Schalken	63	1
		JA Viloca	1	3					S Schalken	6	6
		B Black	6	6					B Black	1	4
	2	P Rafter	3	4