2003 Australian Open – Women's singles

Women's singles
2003 Australian Open
Final
Champion	Serena Williams
Runner-up	Venus Williams
Score	7–6(7–4), 3–6, 6–4
Details
Draw	128
Seeds	32
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
← 2002 · Australian Open · 2004 →

Serena Williams defeated her sister Venus Williams in the final, 7–6^(7–4), 3–6, 6–4 to win the women's singles tennis title at the 2003 Australian Open. It was her fourth consecutive major singles triumph, completing the "Serena Slam", both a non-calendar year Grand Slam and the career Grand Slam. It was also Venus' record fourth consecutive runner-up finish at a major, losing every final to Serena. Serena saved two match points en route to the title, against Kim Clijsters in the semifinals (where at one point in the third set Serena was 1–5 down).

Jennifer Capriati was the two-time defending champion, but lost to Marlene Weingärtner in the first round. Capriati's loss marked the first time the defending Australian Open champion lost in the first round, and the first time at any major that the defending champion lost in the first round since Steffi Graf at the 1994 Wimbledon Championships. With Lindsay Davenport's defeat in the fourth round, a first-time Australian Open champion was guaranteed.

This tournament marked the first Australian Open final without Martina Hingis since 1996. It was also the final appearance of four-time champion Monica Seles, who lost to Klára Koukalová in the second round.

This marked the first major appearance of two future world No. 1's: five-time major champion Maria Sharapova and Jelena Janković, who lost to Klára Koukalová and Amanda Coetzer in the first and second rounds respectively. It was also the major main draw debut of future US Open champion Flavia Pennetta, who lost to Silvia Farina Elia in the first round.

	Quarterfinals							Semifinals							Final
	1	Serena Williams	6	6
	25	Meghann Shaughnessy	2	2
								1	Serena Williams	4	6	7
								4	Kim Clijsters	6	3	5
	4	Kim Clijsters	6	6
	8	Anastasia Myskina	2	4
															1	Serena Williams	77	3	6
															2	Venus Williams	64	6	4
	5	Justine Henin-Hardenne	6	6
		Virginia Ruano Pascual	2	2
								5	Justine Henin-Hardenne	3	3
								2	Venus Williams	6	6
	7	Daniela Hantuchová	4	3
	2	Venus Williams	6	6

	First round							Second round							Third round							Fourth round
	1	S Williams	3	77	7
		É Loit	6	65	5			1	S Williams	6	6
		E Callens	6	6					E Callens	4	0
		M Suchá	0	2											1	S Williams	6	6
		A Jidkova	2	6	6										26	T Tanasugarn	1	1
		L Granville	6	4	0				A Jidkova	2	6	3
		M Drake	0	2				26	T Tanasugarn	6	3	6
	26	T Tanasugarn	6	6																		1	S Williams	6	6
	18	E Daniilidou	78	6																		18	E Daniilidou	4	1
		M Irvin	66	3				18	E Daniilidou	6	6
		C Martínez Granados	0	1					A Frazier	1	2
		A Frazier	6	6											18	E Daniilidou	6	6
		D Bedáňová	6	5	6										16	N Dechy	4	3
		I Benešová	3	7	4				D Bedáňová	3	3
		S Taylor	2	3				16	N Dechy	6	6
	16	N Dechy	6	6

	First round							Second round							Third round							Fourth round
	11	M Maleeva	6	6
		M Bartoli	4	1				11	M Maleeva	2	6	6
		E Dyrberg	3	3					Y-j Cho	6	4	1
		Y-j Cho	6	6											11	M Maleeva	5	6	5
		A Kapros	0	1											20	E Bovina	7	4	7
		R Grande	6	6					R Grande	1	2
		V Zvonareva	2	1				20	E Bovina	6	6
	20	E Bovina	6	6																		20	E Bovina	7	2	4
	25	M Shaughnessy	4	6	6																	25	M Shaughnessy	5	6	6
	Q	N Llagostera Vives	6	3	3			25	M Shaughnessy	6	6
		M Díaz-Oliva	62	2					Ľ Cervanová	1	1
		Ľ Cervanová	77	6											25	M Shaughnessy	6	6
	Q	K Koukalová	6	78											Q	K Koukalová	1	3
	Q	M Sharapova	4	66				Q	K Koukalová	66	7	6
		Ľ Kurhajcová	0	1				6	M Seles	78	5	3
	6	M Seles	6	6

	First round							Second round							Third round							Fourth round
	4	K Clijsters	6	6
		S Reeves	2	1				4	K Clijsters	6	6
		P Mandula	7	6					P Mandula	0	0
		S Talaja	5	1											4	K Clijsters	6	6
		T Poutchek	6	6												T Poutchek	2	1
		T Pisnik	3	0					T Poutchek	2	6	6
		C Torrens Valero	6	4	6				C Torrens Valero	6	4	4
	29	I Majoli	3	6	4																	4	K Clijsters	6	6
	19	A Coetzer	6	6																		19	A Coetzer	3	1
		B Schett	4	3				19	A Coetzer	6	4	6
		R Neffa-de los Ríos	3	3				Q	J Janković	2	6	4
	Q	J Janković	6	6											19	A Coetzer	6	6
		M Matevžič	66	6	6										14	A Pistolesi	0	2
	WC	C Dellacqua	78	2	2				M Matevžič	1r
		M Tu	4	6	2			14	A Pistolesi	5
	14	A Pistolesi	6	4	6

	First round							Second round							Third round							Fourth round
	10	C Rubin	6	7
	Q	M Czink	4	5				10	C Rubin	0	6	6
		P Wartusch	1	4					M Pierce	6	4	2
		M Pierce	6	6											10	C Rubin	6	6
		An Serra Zanetti	77	6											Q	B Schwartz	3	2
		M Müller	65	0					An Serra Zanetti	1	2
	Q	B Schwartz	5	6	6			Q	B Schwartz	6	6
	17	E Dementieva	7	4	2																	10	C Rubin	6	4	1
	28	C Fernández	6	7																		8	A Myskina	4	6	6
	WC	A Szili	1	5				28	C Fernández	6	6
		Å Svensson	4	6	5				M Serna	3	4
		M Serna	6	3	7										28	C Fernández	3	6	3
		M-G Mikaelian	1	0r											8	A Myskina	6	3	6
		E Gagliardi	6	2					E Gagliardi	7	2	0
	Q	E Fislová	5	3				8	A Myskina	5	6	6
	8	A Myskina	7	6

	First round							Second round							Third round							Fourth round
	5	J Henin-Hardenne	6	6
		M Casanova	3	4				5	J Henin-Hardenne	6	6
		H Nagyová	1	2					A Kournikova	0	1
		A Kournikova	6	6											5	J Henin-Hardenne	6	6
		J Craybas	67	6	1										32	K Srebotnik	2	0
		V Razzano	79	4	6				V Razzano	1	77	3
		D Safina	6	3	3			32	K Srebotnik	6	64	6
	32	K Srebotnik	3	6	6																	5	J Henin-Hardenne	7	5	9
	24	T Panova	77	3	6																	9	L Davenport	5	7	7
		A Rösch	62	6	2			24	T Panova	3	7	6
	WC	A Morigami	6	6				WC	A Morigami	6	5	4
	Q	S Hrozenská	2	1											24	T Panova	2	1
		I Tulyaganova	3	6	0										9	L Davenport	6	6
		A Molik	6	4	0r				I Tulyaganova	79	4	5
	WC	C Pin	2	1				9	L Davenport	67	6	7
	9	L Davenport	6	6

	First round							Second round							Third round							Fourth round
	15	A Stevenson	6	6
	WC	E Baltacha	1	4				15	A Stevenson	2	2
		C Black	3	0					D Chládková	6	6
		D Chládková	6	6												D Chládková	6	6
		B Rittner	5	6	4										WC	E Dominikovic	3	2
	WC	E Dominikovic	7	4	6			WC	E Dominikovic	6	6
		L Prusová	2	2				22	A Kremer	1	4
	22	A Kremer	6	6																			D Chládková	3	3
	30	J Husárová	6	6																			V Ruano Pascual	6	6
	Q	ME Salerni	3	0				30	J Husárová	7	5	0
		S Asagoe	2	1					V Ruano Pascual	5	7	6
		V Ruano Pascual	6	6												V Ruano Pascual	6	4	6
		S Foretz	4	6	6											M Weingärtner	1	6	4
		E Kulikovskaya	6	1	0				S Foretz	6	1	2
		M Weingärtner	2	78	6				M Weingärtner	3	6	6
	3	J Capriati	6	66	4

	First round							Second round							Third round							Fourth round
	7	D Hantuchová	7	63	6
		F Zuluaga	5	77	4			7	D Hantuchová	78	77
		E Likhovtseva	66	4					Ad Serra Zanetti	66	63
		Ad Serra Zanetti	78	6											7	D Hantuchová	6	6
	Q	V Webb	2	7	6										WC	S Stosur	4	2
		M Sánchez Lorenzo	6	5	3			Q	V Webb	4	1
	WC	S Stosur	63	6	6			WC	S Stosur	6	6
	31	C Martínez	77	3	4																	7	D Hantuchová	7	6
	21	A Sugiyama	6	4	6																	12	P Schnyder	5	3
		A Widjaja	3	6	2			21	A Sugiyama	4	4
		G Arn	2	1					N Petrova	6	6
		N Petrova	6	6												N Petrova