Defending champion Roger Federer defeated Richard Gasquet in the final, 6–3, 7–5, 7–6^(7–4) to win the singles tennis title at the 2005 Hamburg European Open. He did not lose a single set in the entire tournament.^[1][2][3]

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.

	Semifinals							Final
	1	Roger Federer	6	6
	15	Nikolay Davydenko	3	4
								1	Roger Federer	6	7	77
								Q	Richard Gasquet	3	5	64
	Q	Christophe Rochus	1	1
	Q	Richard Gasquet	6	6

	First round							Second round							Third round							Quarterfinals
	1	R Federer	6	6
		F Verdasco	4	3				1	R Federer	6	6
		D Ferrer	2	6	3				T Berdych	2	1
		T Berdych	6	2	6										1	R Federer	6	6
		A Pavel	2	1											14	T Robredo	2	3
		G Kuerten	6	6					G Kuerten	3	0
	WC	A Waske	6	5	3			14	T Robredo	6	6
	14	T Robredo	4	7	6																	1	R Federer	6	77
	10	G Coria	6	6																		10	G Coria	4	63
		V Spadea	0	2				10	G Coria	6	6
		K Beck	3	2					M Youzhny	2	3
		M Youzhny	6	6											10	G Coria	6	6
		M Ančić	6	6												M Ančić	4	3
		F Mayer	1	2					M Ančić	6	77
		F González	6	6					F González	3	61
	LL	P-H Mathieu	4	4

	First round							Second round							Third round							Quarterfinals
	3	M Safin	6	6
		A Martín	1	0				3	M Safin	6	4	2
		J Melzer	3	5				Q	J C Ferrero	4	6	6
	Q	J C Ferrero	6	7											Q	J C Ferrero	6	2	1
	Q	M Puerta	4	6	6										15	N Davydenko	3	6	6
		O Rochus	6	1	3			Q	M Puerta	5	3
		M Llodra	1	1				15	N Davydenko	7	6
	15	N Davydenko	6	6																		15	N Davydenko	77	6
	11	J Johansson	1	4																			F Volandri	65	4
		S Grosjean	6	6					S Grosjean	2	6	6
	WC	P Kohlschreiber	4	3					N Kiefer	6	3	4
		N Kiefer	6	6												S Grosjean	3	4
		F Volandri	6	6												F Volandri	6	6
	Q	N Almagro	3	2					F Volandri	6	2	6
		F López	6	77					F López	4	6	2
	8	A Agassi	2	65

	First round							Second round							Third round							Quarterfinals
	5	T Henman	6	6
	WC	L Burgsmüller	3	4				5	T Henman	77	6
		G Rusedski	77	3	6				G Rusedski	63	4
	WC	P Petzschner	63	6	3										5	T Henman	6	4	2
		J I Chela	4	6	6											J I Chela	3	6	6
		T Johansson	6	3	4				J I Chela	6	6
		R Söderling	710	7					R Söderling	1	4
	9	D Nalbandian	68	5																			J I Chela	6	0	3
	13	I Ljubičić	6	6																		Q	C Rochus	3	6	6
		L Horna	3	3				13	I Ljubičić	4	2
	Q	S Ventura	3	2				Q	C Rochus	6	6
	Q	C Rochus	6	6											Q	C Rochus	2	7	6
		M Mirnyi	63	5											4	G Gaudio	6	5	3
		Á Costa	77	7					Á Costa	2	0
	Q	D Sánchez	2	2				4	G Gaudio	6	6
	4	G Gaudio	6	6

	First round							Second round							Third round							Quarterfinals
	LL	J Mónaco	6	65	6
		I Andreev	2	77	1			LL	J Mónaco	3	6	66
		J Novák	6	6					J Novák	6	4	78
		P Srichaphan	2	3												J Novák	3	4
		R Schüttler	5	77	4										Q	A Seppi	6	6
	Q	A Seppi	7	65	6			Q	A Seppi	711	6
		F Santoro	2	1				12	G Cañas	69	2
	12	G Cañas	6	6																		Q	A Seppi	1	2
	16	R Štěpánek	77	6																		Q	R Gasquet	6	6
		C Saulnier	65	2				16	R Štěpánek	5	62
		T Haas	4	5					D Hrbatý	7	77
		D Hrbatý	6	7												D Hrbatý	1	2
	Q	R Gasquet	6	1											Q	R Gasquet	6	6
		I Karlović	1	0	r			Q	R Gasquet	2	6	6
		N Massú	77	4	7				N Massú	6	2	2
	2	A Roddick	64	6	5

	First round							Qualifying competition
	1	Juan Carlos Ferrero	713	6
		Gilles Simon	611	3
								1	Juan Carlos Ferrero	6	6
								15	Óscar Hernández	0	1
	WC	Frank Wintermantel	2	6	5
	15	Óscar Hernández	6	2	7

	First round							Qualifying competition
	2	Mariano Puerta	6	6
		Ivo Heuberger	2	2
								2	Mariano Puerta	7	6
								16	Tomas Behrend	5	4
		Jean-René Lisnard	7	3	2
	16	Tomas Behrend	5	6	6

	First round							Qualifying competition
	3	Richard Gasquet	6	6
	WC	Tobias Summerer	1	2
								3	Richard Gasquet	6	6
								11	Davide Sanguinetti	1	2
		Stanislas Wawrinka	2	5
	11	Davide Sanguinetti	6	7

	First round							Qualifying competition
	4	Kevin Kim	61	2
		Thierry Ascione	77	6
									Thierry Ascione	5	4
									Andreas Seppi	7	6
		Andreas Seppi	7	6
	12	Félix Mantilla	5	1

	First round							Qualifying competition
	5	Christophe Rochus	7	6
	WC	Sebastian Rieschick	5	4
								5	Christophe Rochus	6	4	6
								13	Álex Calatrava	3	6	0
		Grégory Carraz	68	5
	13	Álex Calatrava	710	7

	First round							Qualifying competition
	6	Paul-Henri Mathieu	6	6
		Alexander Popp	2	0
								6	Paul-Henri Mathieu	2	2
									Nicolás Almagro	6	6
		Nicolás Almagro	3	77	6
	9	Robby Ginepri	6	63	2

	First round							Qualifying competition
	7	Juan Mónaco	6	7
	Alt	Nicolás Lapentti	4	5
								7	Juan Mónaco	65	0
									David Sánchez	77	6
		David Sánchez	3	6	6
	Alt	Takao Suzuki	6	2	3

	First round							Qualifying competition
	8	Santiago Ventura	6	4	7
	WC	Mischa Zverev	2	6	5
								8	Santiago Ventura	4	6	7
								10	Guillermo García López	6	2	5
		Björn Phau	66	4
	10	Guillermo García López	78	6

• 2005 Hamburg Masters draw
• 2005 Hamburg Masters qualifying draw
• ITF tournament profile