Singles
2005 Allianz Suisse Open Gstaad
Champion	Gastón Gaudio
Runner-up	Stanislas Wawrinka
Score	6–4, 6–4

Roger Federer was the defending champion, but did not participate this year.

Gastón Gaudio won the tournament, beating Stanislas Wawrinka in the final, 6–4, 6–4.

Seeds

Draw

Finals

	Semifinals							Final
	Q	Răzvan Sabău	67	4
		Stanislas Wawrinka	79	6
									Stanislas Wawrinka	4	4
								2	Gastón Gaudio	6	6
	7	Nicolás Massú	3	2
	2	Gastón Gaudio	6	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	N Davydenko	6	1r
		S Sargsian	1	0					S Sargsian	4	4
	WC	M Lammer	6	2	3			Q	R Sabău	6	6
	Q	R Sabău	3	6	6										Q	R Sabău	0	7	7
		I Andreev	5	3												P Starace	6	5	5
		F López	7	6					F López	66	0
		P Starace	6	63	7				P Starace	78	6
	6	J Novák	3	77	5																	Q	R Sabău	67	4
	3	R Štěpánek	78	6																			S Wawrinka	79	6
	WC	Y Allegro	66	1				3	R Štěpánek	77	4	4
		P Kohlschreiber	3	5				Q	F Čermák	65	6	6
	Q	F Čermák	6	7											Q	F Čermák	4	65
		F Verdasco	6	6												S Wawrinka	6	77
	Q	J Pospíšil	2	4					F Verdasco	6	4	68
		S Wawrinka	6	2	6				S Wawrinka	3	6	710
	8	F Volandri	1	6	4

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	N Massú	77	77
		T Behrend	64	63				7	N Massú	7	2	6
		J Hernych	7	6					J Hernych	5	6	4
	Q	H Armando	5	3											7	N Massú	6	6
		L Horna	710	6												L Horna	4	4
		T Zíb	68	4					L Horna	6	6
		A di Mauro	6	1	6				A di Mauro	3	4
	4	D Ferrer	4	6	3																	7	N Massú	3	2
	5	I Ljubičić	6	6																		2	G Gaudio	6	6
		R Mello	3	2				5	I Ljubičić	64	3
		S Koubek	77	65	66				A Seppi	77	6
		A Seppi	65	77	78											A Seppi	4	6	65
		R Schüttler	78	2	3										2	G Gaudio	6	1	77
		D Sanguinetti	66	6	6				D Sanguinetti	2	2
	WC	G Bastl	5	2				2	G Gaudio	6	6
	2	G Gaudio	7	6

References

• Main draw
• Qualifying draw