Boys' singles
2005 Australian Open
Final
Champion	Donald Young
Runner-up	Kim Sun-yong
Score	6–2, 6–4
Events
Singles men women boys girls Doubles men women mixed boys girls WC Singles men women quad WC Doubles men women quad Legends men women mixed
← 2004 · Australian Open · 2006 →

Gaël Monfils was the defending champion, but did not compete in the Juniors in this year.

Donald Young defeated Kim Sun-yong (6–2, 6–4) in the final.

	Quarterfinals							Semifinals							Final
	1	Kim Sun-yong	5	6	6
		Carsten Ball	7	3	2
								1	Kim Sun-yong	5	6	7
								4	Robin Haase	7	2	5
	4	Robin Haase	6	6
	7	Timothy Neilly	3	2
															1	Kim Sun-yong	2	4
															2	Donald Young	6	6
	6	Sergei Bubka	7	7
	3	Lukáš Lacko	5	5
								6	Sergei Bubka	2	4
								2	Donald Young	6	6
		Marin Čilić	3	5
	2	Donald Young	6	7

	First round							Second round							Third round							Quarterfinals
	1	Kim Sun-yong	66	7	6
		Jesse Levine	78	5	2			1	S-y Kim	6	77
	Q	Elbert Sie	3	66					A van der Duim	2	63
		Antal van der Duim	6	78											1	S-y Kim	62	6	4
		Petar Jelenić	6	2	6											P Jelenić	77	3	3r
		Jiri Skoloudik	3	6	2				P Jelenić	4	77	6
		Peter Polansky	2	2				16	M Pedersen	6	61	3
	16	Martin Pedersen	6	6																		1	S-y Kim	5	6	6
	11	Pavol Červenák	6	6																			C Ball	7	3	2
	WC	Joel Lindner	4	2				11	P Červenák	6	3	6
		Andrea Arnaboldi	77	78					A Arnaboldi	1	6	3
		Michael Look	64	66											11	P Červenák	6	4	0
		Serguei Tarasevitch	3	4												C Ball	3	6	6
		Carsten Ball	6	6					C Ball	6	7
		Abdullah Maqdes	62	4				5	C-H Yi	4	5
	5	Chu-Huan Yi	77	6

	First round							Second round							Third round							Quarterfinals
	4	Robin Haase	6	5	6
	Q	Richard Ruckelshausen	4	7	2			4	R Haase	6	6
	Q	Paris Gemouchidis	5	6	5				J Marek	4	1
		Jan Marek	7	1	7										4	R Haase	6	7
	Q	Thomas Kromann	3	61											14	F Škugor	3	5
	WC	Todd Ley	6	77				WC	T Ley	1	64
		Benedict Halbroth	5	2				14	F Škugor	6	77
	14	Franko Škugor	7	6																		4	R Haase	6	6
	12	Alexandr Dolgopolov	7	6																		7	T Neilly	3	2
		Miguel Ángel Reyes-Varela	5	3				12	A Dolgopolov	6	65	2
	Q	Martin Colenbrander	77	65	4			Q	J Strydom	4	77	6
	Q	Jurgens Strydom	65	77	6										Q	J Strydom	4	2
		Marcus Fugate	6	7											7	T Neilly	6	6
		Tristan Farron-Mahon	4	5					M Fugate	2	4
	WC	James Lemke	63	65				7	T Neilly	6	6
	7	Timothy Neilly	77	77

	First round							Second round							Third round							Quarterfinals
	6	Sergei Bubka	6	6
		Bryan Koniecko	2	3				6	S Bubka	7	6
	WC	Stephen Donald	6	3	1				J Grubisic	5	0
		Jurica Grubisic	2	6	6										6	S Bubka	6	77
		Andrew Coelho	4	77	8											R Sweeting	4	61
		Luka Ocvirk	6	64	6				A Coelho	5	6	12
		Ryan Sweeting	6	2	6				R Sweeting	7	4	14
	10	Tim Smyczek	3	6	2																	6	S Bubka	7	7
	15	Jochen Schoettler	1	6	6																	3	L Lacko	5	5
		Myles Blake	6	3	2			15	J Schoettler	6	7
		Jamie Hunt	710	1	1			Q	F Siladi	4	5
	Q	Filip Siladi	68	6	6										15	J Schoettler	3	2
		Michael Johnson	6	6											3	L Lacko	6	6
		Weerapat Doakmaiklee	3	3					M Johnson	0	4
		Dylan Arnould	2	2				3	L Lacko	6	6
	3	Lukáš Lacko	6	6

	First round							Second round							Third round							Quarterfinals
	8	Dušan Lojda	6	7
		Alex Clayton	2	5				8	D Lojda	64	6	6
	WC	Nick Lindahl	4	6	6			WC	N Lindahl	77	3	2
	Q	Rubin Statham	6	4	3										8	D Lojda	4	2
		Marin Čilić	6	6												M Čilić	6	6
		Steven Goh	3	1					M Čilić	79	6
		Martin Sayer	1	64				9	J Chardy	67	4
	9	Jérémy Chardy	6	77																			M Čilić	3	5
	13	Thiemo de Bakker	5	6	6																	2	D Young	6	7
	WC	Tomas Habsuda	7	3	3			13	T de Bakker	2	6	2
		Michael Shabaz	6	6					M Shabaz	6	4	6
	WC	Ben Rocavert	3	3												M Shabaz	2	4
		Takanobu Fujii	4	68											2	D Young	6	6
	WC	Patrick Nicholls	6	710				WC	P Nicholls	3	7	2
		Philip Bester	62	1				2	D Young	6	5	6
	2	Donald Young	77	6

• Draw