Singles
1999 Monte Carlo Open
Final
Champion	Gustavo Kuerten[1]
Runner-up	Marcelo Ríos
Score	6–4, 2–1, retired
Details
Draw	56 (7Q / 5WC)
Seeds	16
Events
Singles Doubles
← 1998 · Monte Carlo Open · 2000 →

Gustavo Kuerten won the singles tennis title at the 1999 Monte Carlo Open when Marcelo Ríos retired from the final with the scoreline at 6–4, 2–1.

Carlos Moyá was the defending champion, but lost in the quarterfinals to Jérôme Golmard.

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

	Semifinals							Final[1]
		Jérôme Golmard	4	6	2
	9	Marcelo Ríos	6	3	6
								9	Marcelo Ríos	4	1r
								13	Gustavo Kuerten	6	2
	13	Gustavo Kuerten	3	6	6
	15	Félix Mantilla	6	3	4

	First round							Second round							Third round							Quarterfinals
								1	C Moyà	3	6	6
		S Doseděl	2	1				LL	D Pescariu	6	3	4
	LL	D Pescariu	6	6											1	C Moyà	6	6
	SE	K Alami	6	6											SE	K Alami	4	1
	LL	S Schalken	2	3				SE	K Alami	6	6
		T Muster	6	6					T Muster	3	3
	16	T Johansson	3	4																		1	C Moyà	77	3	0
		C Pioline	4	7	4																		J Golmard	65	6	6
	WC	B Becker	6	5	6			WC	B Becker
		J Golmard	6	6					J Golmard	w/o
		D Sanguinetti	1	2												J Golmard	6	6
	WC	A Di Pasquale	77	5	6										WC	A Di Pasquale	1	4
		A Berasategui	64	7	4			WC	A Di Pasquale	6	77
								LL	V Santopadre	3	64

	First round							Second round							Third round							Quarterfinals
								5	M Philippoussis	77	6
		J Björkman	65	6	4				R Delgado	64	4
		R Delgado	77	0	6										5	M Philippoussis	4	77	6
	Q	S Prieto	0	4											WC	S Grosjean	6	65	2
	WC	S Grosjean	6	6				WC	S Grosjean	7	6
		M Safin	4	2				14	T Haas	5	2
	14	T Haas	6	6																		5	M Philippoussis	2	77	4
	11	G Ivanišević	1	4																		9	M Ríos	6	62	6
		H Arazi	6	6					H Arazi	6	6
	Q	A Clément	4	2					M Puerta	1	4
		M Puerta	6	6												H Arazi	3	3
		A Pavel	6	7											9	M Ríos	6	6
		Y El Aynaoui	4	5					A Pavel	6	4	66
								9	M Ríos	0	6	78

	First round							Second round							Third round							Quarterfinals
								6	K Kučera	4	3
	WC	R Federer	63	0					V Spadea	6	6
		V Spadea	77	6												V Spadea	6	2	6
		F Clavet	6	6												F Clavet	3	6	3
		D Vacek	1	0					F Clavet	6	6
		D Hrbatý	5	77	2			12	T Enqvist	2	0
	12	T Enqvist	7	64	6																		V Spadea	3	3
	13	G Kuerten	6	6																		13	G Kuerten	6	6
	Q	M Carlsson	1	3				13	G Kuerten	65	6	6
		B Ulihrach	6	6					B Ulihrach	77	2	4
		F Vicente	2	2											13	G Kuerten	6	77
		F Meligeni	6	5	6											F Meligeni	2	62
		A Ilie	4	7	2				F Meligeni	65	6	7
								3	T Henman	77	4	5

	First round							Second round							Third round							Quarterfinals
								8	G Rusedski	2	2
	Q	J Novák	6	7				Q	J Novák	6	6
		M Rosset	3	5											Q	J Novák	6	2	4
	Q	J van Lottum	5	6	6										10	Á Costa	4	6	6
		J Siemerink	7	1	4			Q	J van Lottum	2	3
		M Zabaleta	3	4				10	Á Costa	6	6
	10	Á Costa	6	6																		10	Á Costa	4	77	64
	15	F Mantilla	6	6																		15	F Mantilla	6	62	77
	Q	F Squillari	2	4				15	F Mantilla	7	77
		A Gaudenzi	1	61					N Lapentti	5	64
		N Lapentti	6	77											15	F Mantilla	6	6
	Q	I Ljubičić	5	6	6										Q	I Ljubičić	2	2
	WC	A Medvedev	7	0	1			Q	I Ljubičić	6	6
								2	Y Kafelnikov	1	2

• ATP main draw