Singles
1998 Monte Carlo Open
Final
Champion	Carlos Moyà[1]
Runner-up	Cédric Pioline
Score	6–3, 6–0, 7–5
Details
Draw	56 (7Q / 4WC)
Seeds	16
Events
Singles Doubles
← 1997 · Monte Carlo Open · 1999 →

Carlos Moyá defeated Cédric Pioline in the final, 6–3, 6–0, 7–5 to win the singles tennis title at the 1998 Monte Carlo Open.

Marcelo Ríos was the reigning champion, but did not participate this year.

The top eight seeds received a bye to the second round.

	Semifinals							Final[1]
	10	Cédric Pioline	6	0	77
	12	Alberto Berasategui	3	6	65
								10	Cédric Pioline	3	0	5
								14	Carlos Moyà	6	6	7
	14	Carlos Moyà	4	6	6
	7	Richard Krajicek	6	1	4

	First round							Second round							Third round							Quarterfinals
								1	P Sampras	6	7
		A Agassi	6	6					A Agassi	4	5
		T Martin	2	1											1	P Sampras	1	1
		F Santoro	6	6												F Santoro	6	6
	WC	A Clément	2	1					F Santoro	6	6
	Q	J Tarango	1	6	5			15	S Bruguera	3	0
	15	S Bruguera	6	1	7																		F Santoro	6	2	4
	10	C Pioline	6	3	6																	10	C Pioline	1	6	6
		C Costa	2	6	3			10	C Pioline	6	77
	Q	N Lapentti	2	4				WC	S Grosjean	1	65
	WC	S Grosjean	6	6											10	C Pioline	78	6
		A Portas	2	1											8	G Kuerten	66	1
		F Clavet	6	6					F Clavet	5	5
								8	G Kuerten	7	7

	First round							Second round							Third round							Quarterfinals
								3	G Rusedski	4	6	3
	WC	B Becker	5	6	6			WC	B Becker	6	3	6
		J Siemerink	7	3	1										WC	B Becker	6	6
		M Filippini	6	2	64										13	M Philippoussis	1	1
		M Norman	2	6	77				M Norman	4	3
		J Alonso	69	6	4			13	M Philippoussis	6	6
	13	M Philippoussis	711	4	6																	WC	B Becker	77	5	1
	12	A Berasategui	6	7																		12	A Berasategui	64	7	6
		T Woodbridge	0	5				12	A Berasategui	6	77
	Q	J Sánchez	3	6	4			WC	D Vacek	0	61
	WC	D Vacek	6	4	6										12	A Berasategui	3	6	6
		S Doseděl	77	6												S Doseděl	6	3	3
		R Fromberg	65	4					S Doseděl	6	6
								5	J Björkman	1	0

	First round							Second round							Third round							Quarterfinals
								6	Á Corretja	77	6
		A Medvedev	4	6	79				A Medvedev	64	4
		G Ivanišević	6	2	67										6	Á Corretja	77	6
		B Steven	3	1											SE	A Gaudenzi	61	4
	SE	A Gaudenzi	6	6				SE	A Gaudenzi	6	4	6
	Q	G Blanco	6	6				Q	G Blanco	4	6	3
	11	T Henman	2	4																		6	Á Corretja	3	2
	14	C Moyà	6	6																		14	C Moyà	6	6
		T Muster	0	3				14	C Moyà	6	6
		H Arazi	6	6					H Arazi	1	1
	Q	J Burillo	4	0											14	C Moyà	6	6
		T Johansson	7	610	3										4	Y Kafelnikov	2	3
		M Woodforde	5	712	6				M Woodforde	6	2	2
								4	Y Kafelnikov	4	6	6

	First round							Second round							Third round							Quarterfinals
								7	R Krajicek	6	6
	LL	J A Viloca	6	6				LL	J A Viloca	4	2
	Q	D Nargiso	3	4											7	R Krajicek	6	6
		M Rosset	1	0r												B Ulihrach	4	0
		B Ulihrach	6	3					B Ulihrach	6	6
		N Kiefer	6	6					N Kiefer	4	2
	9	F Mantilla	1	4																		7	R Krajicek	4	77	6
	16	Á Costa	6	6																		2	P Korda	6	61	1
		T Enqvist	1	3				16	Á Costa	6	6
		M Gustafsson	6	7					M Gustafsson	4	2
	LL	K Alami	3	5											16	Á Costa	7	4	4
	Q	S Schalken	6	2	4										2	P Korda	5	6	6
		W Ferreira	4	6	6				W Ferreira	1	3
								2	P Korda	6	6

• ATP main draw