Singles
1988 Geneva Open
Final
Champion	Marián Vajda
Runner-up	Kent Carlsson
Score	6–4, 6–4
Details
Draw	32
Seeds	8
Events
Singles Doubles
← 1987 · Geneva Open · 1989 →

Claudio Mezzadri was the defending champion, but lost in the second round this year.

Marián Vajda won the title, defeating Kent Carlsson 6–4, 6–4 in the final.

	Semifinals							Final
	1	Kent Carlsson	6	6
		Horacio de la Peña	2	2
								1	Kent Carlsson	4	4
									Marián Vajda	6	6
		Eduardo Bengoechea	5	1
		Marián Vajda	7	6

	First round							Second round							Quarterfinals							Semifinals
	1	K Carlsson	6	6
	Q	R Båthman	1	3				1	K Carlsson	6	1	6
		D Pérez	6	6	4			WC	R Stadler	2	6	0
	WC	R Stadler	4	7	6										1	K Carlsson	6	6
	WC	M Rosset	6	2	2										7	F Luna	1	2
		T Meinecke	1	6	6				T Meinecke	6	2
	WC	A Thoms	3	1				7	F Luna	7	6
	7	F Luna	6	6																		1	K Carlsson	6	6
	4	M Gustafsson	4	4																			H de la Peña	2	2
		C Bergström	6	6					C Bergström	6	6
	Q	I Flego	6	6	7			Q	I Flego	2	2
	Q	Z Kuhárszky	7	4	6											C Bergström	2	5
	Q	M Koevermans	7	4	6											H de la Peña	6	7
		H de la Peña	6	6	7				H de la Peña	7	6
		J Gunnarsson	7	6					J Gunnarsson	6	2
	6	T Šmíd	6	4

	First round							Second round							Quarterfinals							Semifinals
	5	C Mezzadri	6	6
		E Masso	4	2				5	C Mezzadri	2	2
		E Bengoechea	6	6					E Bengoechea	6	6
		J Aguilera	1	1												E Bengoechea	6	6
		A Tous	6	3	4										3	J Arrese	1	2
		J Colas	2	6	6				J Colas	1	3
		F Segărceanu	6	1				3	J Arrese	6	6
	3	J Arrese	7	6																			E Bengoechea	5	1
	8	B Orešar	7	6																			M Vajda	7	6
		S Guy	6	1				8	B Orešar	6	2	4
		J Potier	6	6	5				P Rebolledo	1	6	6
		P Rebolledo	2	7	7											P Rebolledo	3	2
		P Arraya	6	6	6											M Vajda	6	6
		C Motta	7	0	1				P Arraya	6	3	3
		M Vajda	6	6	6				M Vajda	3	6	6
	2	G Pérez Roldán	4	7	3

• ATP main draw