Singles
2004 Rogers AT&T Cup
Final
Champion	Amélie Mauresmo
Runner-up	Elena Likhovtseva
Score	6–1, 6–0
Events
Singles Doubles
← 2003 · Rogers AT&T Cup · 2005 →

Amélie Mauresmo defeated Elena Likhovtseva in the final, 6–1, 6–0 to win the women's singles tennis title at the 2004 Canadian Open.

Justine Henin-Hardenne was the reigning champion, but chose not to participate that year.

The top eight seeds received a bye into the second round.

	Quarterfinals							Semifinals							Final
	3	Anastasia Myskina	7	6
	13	Magdalena Maleeva	5	1
								3	Anastasia Myskina	3	7	4
									Elena Likhovtseva	6	5	6
	5	Jennifer Capriati	2	5
		Elena Likhovtseva	6	7
																Elena Likhovtseva	1	0
															2	Amélie Mauresmo	6	6
	10	Vera Zvonareva	6	6
		Tatiana Golovin	3	1
								10	Vera Zvonareva	66	2
								2	Amélie Mauresmo	7	6
	12	Karolina Šprem	6	2	4
	2	Amélie Mauresmo	3	6	6

	First round							Second round							Third round							Quarterfinals
								3	A Myskina	6	6
		A Parra Santonja	4	7	6				A Parra Santonja	0	4
	Q	A Kremer	6	62	4										3	A Myskina	6	6
		B Strýcová	63	4											15	C Rubin	4	0
	Q	M Washington	7	6				Q	M Washington	4	3
	Q	A Matic	4	3				15	C Rubin	6	6
	15	C Rubin	6	6																		3	A Myskina	7	6
	13	M Maleeva	7	3	6																	13	M Maleeva	5	1
		L Krasnoroutskaya	64	6	4			13	M Maleeva	6	64	6
		M Suchá	7	4	6				M Suchá	3	7	4
	Q	R Neffa-de los Ríos	63	6	2										13	M Maleeva	6	6
		S Obata	63	4											9	P Suárez	4	3
		J Janković	7	6					J Janković	3	2
								9	P Suárez	6	6

	First round							Second round							Third round							Quarterfinals
								5	J Capriati	7	7
		A Jidkova	6	6					A Jidkova	63	5
	Q	T Ashley	1	2											5	J Capriati	6	6
		N Pratt	6	6											17	M Pierce	2	4
		S Perry	4	4					N Pratt	1	1
		M Weingärtner	1	1				17	M Pierce	6	6
	17	M Pierce	6	6																		5	J Capriati	2	5
	11	F Schiavone	6	7																			E Likhovtseva	6	7
	WC	M-È Pelletier	3	5				11	F Schiavone	7	6
		N Dechy	6	6					N Dechy	64	4
		L Granville	3	2											11	F Schiavone	2	3
		E Likhovtseva	0	6	6											E Likhovtseva	6	6
		M Vento-Kabchi	6	3	2				E Likhovtseva	6	66	7
								8	N Petrova	4	7	5

	First round							Second round							Third round							Quarterfinals
								6	M Sharapova	6	6
		K Brandi	3	6	6				K Brandi	1	4
	LL	R Grande	6	3	0										6	M Sharapova	6	4	4
	Q	A Widjaja	7	3	4										10	V Zvonareva	4	6	6
	Q	B Mattek	62	6	6			Q	B Mattek	2	65
		A Morigami	1	3				10	V Zvonareva	6	7
	10	V Zvonareva	6	6																		10	V Zvonareva	6	6
	16	F Zuluaga	6	6																			T Golovin	3	1
		M Sánchez Lorenzo	1	4				16	F Zuluaga	3	6	2
		A Barna	2	1					T Golovin	6	4	6
		T Golovin	6	6												T Golovin	60	6	6
		G Dulko	6	7												G Dulko	7	3	4
	LL	L Lee-Waters	3	5					G Dulko	6	6
								4	E Dementieva	1	4

	First round							Second round							Third round							Quarterfinals
								7	A Sugiyama	1	6	6
		D Hantuchová	5						D Hantuchová	6	4	4
		É Loit	3	r											7	A Sugiyama	3	4
		S Asagoe	6	6											12	K Šprem	6	6
	WC	A Wozniak	3	2					S Asagoe	2	6	1
	WC	M Drake	2	1				12	K Šprem	6	4	6
	12	K Šprem	6	6																		12	K Šprem	6	2	4
	14	E Bovina	6	6																		2	A Mauresmo	3	6	6
		V Ruano Pascual	1	3				14	E Bovina	7	6
	Q	L Osterloh	0	6	6			Q	L Osterloh	67	4
		J Craybas	6	1	3										14	E Bovina	3	6	2
		M Marrero	3	3											2	A Mauresmo	6	3	6
		T Tanasurgarn	6	6					T Tanasurgarn	4	6	2
								2	A Mauresmo	6	1	6

• Draw and Qualifying Draw