Singles
1998 Romanian Open
Final
Champion	Francisco Clavet[1]
Runner-up	Arnaud Di Pasquale
Score	6–4, 2–6, 7–5
Details
Draw	32
Seeds	8
Events
Singles Doubles
← 1997 · Romanian Open · 1999 →

The 1998 Romanian Open was a men's tennis tournament played on Clay in Bucharest, Romania that was part of the World Series of the 1998 ATP Tour. It was the sixth edition of the tournament and was held from 14 September – 21 September.

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

	Semifinals							Final[1]
	1	Francisco Clavet	3	6	6
		Albert Portas	6	0	2
								1	Francisco Clavet	6	4	7
									Arnaud Di Pasquale	2	6	5
		Arnaud Di Pasquale	6	2	7
		Adrian Voinea	3	6	5

	First round							Second round							Quarterfinals							Semifinals
	1	F Clavet	6	7
		C Vinck	2	62				1	F Clavet	3	7	6
		D Pescariu	6	6					D Pescariu	6	5	2
		C Ruud	3	4											1	F Clavet	7	6
		Á Calatrava	6	3	1										8	J Alonso	5	0
		O Gross	3	6	1r				Á Calatrava	2	7	4
	8	J Alonso	1					8	J Alonso	6	64	6
		T Zíb	0r																			1	F Clavet	3	6	6
	4	C Costa	6	7																			A Portas	6	0	2
		S Grosjean	2	5				4	C Costa	7	3	1
		A Pavel	6	6					A Pavel	66	6	6
		F Maggi	0	3												A Pavel	6	3	5
		A Portas	6	6												A Portas	2	6	7
		J Sánchez	3	3					A Portas	4	7	6
		A Sávolt	6	6					A Sávolt	6	63	2
	5	A Ilie	0	2

	First round							Second round							Quarterfinals							Semifinals
	6	N Lapentti	6	6
		J Apell	3	4				6	N Lapentti	2	7	1
		A Di Pasquale	7	7					A Di Pasquale	6	67	6
		G Trifu	61	65												A Di Pasquale	7	2	6
		J Díaz	6	6												G Blanco	62	6	2
		B Karbacher	1	3					J Díaz	4	2
		G Blanco	7	7					G Blanco	6	6
	3	D Hrbatý	66	5																			A Di Pasquale	6	2	7
		I Moldovan	6	6																			A Voinea	3	6	5
	7	M Puerta	4	4					I Moldovan	3	4
		A Voinea	6	6					A Voinea	6	6
		JA Marín	4	3												A Voinea	6	6
		E Benfele Álvarez	6	6												E Benfele Álvarez	4	1
		N Rovas	3	2					E Benfele Álvarez	7	3	7
	2	R Fromberg	64	6	6			2	R Fromberg	64	6	5
		R Sabău	7	1	3

• Main draw