Singles
1990 Monte Carlo Open
Champion	Andrei Chesnokov
Runner-up	Thomas Muster
Score	7–5, 6–3, 6–3
Draw	56 (6Q / 4WC)
Seeds	16

Andrei Chesnokov defeated Thomas Muster in the final, 7–5, 6–3, 6–3 to win the singles tennis title at the 1990 Monte Carlo Open.

Alberto Mancini was the defending champion, but lost in the second round to Henri Leconte.

Seeds

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

Draw

Finals

	Semifinals							Final
		Thomas Muster	6	6
	WC	Henri Leconte	1	2
									Thomas Muster	5	3	3
								12	Andrei Chesnokov	7	6	6
	12	Andrei Chesnokov	4	6	77
	7	Emilio Sánchez	6	1	62

Top half

Section 1

	First round							Second round							Third round							Quarterfinals
								1	S Edberg	77	6
		J Arias	6	6					J Arias	65	3
		G Muller	1	3											1	S Edberg	64	66
		J Aguilera	6	6												J Aguilera	77	78
		D Nargiso	1	3					J Aguilera	69	6
		J-P Fleurian	4	4				16	S Bruguera	711	4	r
	16	S Bruguera	6	6																			J Aguilera	3	4
	9	J Courier	6	4	6																		T Muster	6	6
		M Stich	3	6	4			9	J Courier	6	6
	Q	C Bergström	6	2	4				G Ivanišević	3	1
		G Ivanišević	4	6	6										9	J Courier	4	4
		T Muster	6	6												T Muster	6	6
		M Filippini	2	2					T Muster	6	6
								8	M Jaite	3	2

Section 2

	First round							Second round							Third round							Quarterfinals
								4	A Krickstein	5	2
		P Canè	63	5					J Arrese	7	6
		J Arrese	77	6												J Arrese	77	4	5
		K Nováček	6	6											14	H Skoff	63	6	7
		L Mattar	4	1					K Nováček	3	710	4
		N Kroon	0	4				14	H Skoff	6	68	6
	14	H Skoff	6	6																		14	H Skoff	2	77	4
	11	A Mancini	6	6																		WC	H Leconte	6	63	6
		C van Rensburg	2	4				11	A Mancini	4	4
	WC	H Leconte	6	6				WC	H Leconte	6	6
		T Witsken	1	4											WC	H Leconte	6	6
		J Sánchez	6	6											6	A Gómez	3	4
	WC	F Santoro	2	4					J Sánchez	61	4
								6	A Gómez	77	6

Bottom half

Section 3

	First round							Second round							Third round							Quarterfinals
								5	J Berger	6	4	1
	Q	L Jönsson	3	1					J Yzaga	4	6	6
		J Yzaga	6	6												J Yzaga	2	1
		J Hlasek	3	1											12	A Chesnokov	6	6
		T Carbonell	6	6					T Carbonell	1r
		G Prpić	5	3				12	A Chesnokov	4
	12	A Chesnokov	7	6																		12	A Chesnokov	6	6
	13	G Pérez Roldán	6	6																		WC	M Rosset	3	2
	LL	D Pérez	2	3				13	G Pérez Roldán	1	62
	WC	M Rosset	6	6				WC	M Rosset	6	77
	Q	S Cortés	4	4											WC	M Rosset	6	6
		J Gunnarsson	0	0r											Q	D Engel	0	4
	Q	D Engel	6	3				Q	D Engel	7	6
								Q	G Markus	5	4

Section 4

	First round							Second round							Third round							Quarterfinals
								7	E Sánchez	6	6
	Q	M Vajda	6	6				Q	M Vajda	1	1
		M Střelba	4	2											7	E Sánchez	6	6
		P Haarhuis	3	5											WC	G Forget	2	2
	WC	G Forget	6	7				WC	G Forget	6	5	6
		J Svensson	77	6					J Svensson	4	7	1
	10	C-U Steeb	65	3																		7	E Sánchez	4	7	77
	15	M Gustafsson	2	2																		2	B Becker	6	5	63
		R Agénor	6	6				15	R Agénor	6	6
		P Korda	6	3	6				P Korda	3	2
		Y Noah	1	6	2											R Agénor	2	6	4
		M Šrejber	1	1											2	B Becker	6	4	6
	Q	C Pioline	6	6				Q	C Pioline	5	4
								2	B Becker	7	6

External links

• 1990 Monte Carlo Open draw