Doubles
2003 Canada Masters and the Rogers AT&T Cup
2002 Champions	Bob Bryan Mike Bryan
Final
Champions	Mahesh Bhupathi Max Mirnyi
Runners-up	Jonas Björkman Todd Woodbridge
Score	6–3, 7–6(7–4)
Events
Singles men women Doubles men women
← 2002 · Canada Masters · 2004 → ← 2002 · Rogers AT&T Cup · 2004 →

The 2003 Canada Masters doubles was the men's doubles event of the one hundred and fourteenth edition of the Canada Masters; a WTA Tier I tournament and the most prestigious men's tennis tournament held in Canada. Bob Bryan and Mike Bryan were the defending champions but lost in the semifinals to Jonas Björkman and Todd Woodbridge. Mahesh Bhupathi and Max Mirnyi won in the final 6–3, 7–6^(7–4) against Björkman and Woodbridge.

Champion seeds are indicated in bold text while text in italics indicates the round in which those seeds were eliminated. All eight seeded teams received byes to the second round.

	Final
	1	Mahesh Bhupathi Max Mirnyi	6	77
	4	Jonas Björkman Todd Woodbridge	3	64

	First round							Second round							Quarterfinals							Semifinals
								1	M Bhupathi M Mirnyi	77	6
		F Čermák L Friedl	4	6	6				F Čermák L Friedl	65	4
	ALT	Y El Aynaoui M Zabaleta	6	3	1										1	M Bhupathi M Mirnyi	710	77
	ALT	I Ljubičić F López	6	4	4										8	W Arthurs P Hanley	68	65
		T Cibulec P Vízner	3	6	6				T Cibulec P Vízner	3	5
								8	W Arthurs P Hanley	6	7
																						1	M Bhupathi M Mirnyi	w/o
																						6	M Damm C Suk
								3	M Knowles D Nestor	77	2	5
		W Black K Ullyett	6	5	66				J Blake J Eagle	64	6	7
		J Blake J Eagle	3	7	78											J Blake J Eagle	2	6	4
	WC	F Niemeyer M Youzhny	2	6	6										6	M Damm C Suk	6	3	6
		C Moyá N Zimonjić	6	1	3				F Niemeyer M Youzhny	4	63
								6	M Damm C Suk	6	77

	First round							Second round							Quarterfinals							Semifinals
								7	M Llodra F Santoro	77	6
		J Nieminen P Srichaphan	6	6					J Nieminen P Srichaphan	63	4
		A Calleri D Nalbandian	4	4											7	M Llodra F Santoro	4	4
		G Etlis M Rodríguez	3	77	77										4	J Björkman T Woodbridge	6	6
		D Johnson Y Kafenikov	6	65	63				G Etlis M Rodríguez	3	4
								4	J Björkman T Woodbridge	6	6
																						4	J Björkman T Woodbridge	78	64	7
																						2	B Bryan M Bryan	66	77	5
								5	L Paes D Rikl	4
	WC	F Dancevic S Larose	6	3	77				F Dancevic S Larose	1r
		J Novák R Štěpánek	1	6	65										5	L Paes D Rikl	3	4
		T Robredo R Schüttler	6	6											2	B Bryan M Bryan	6	6
		C Haggard G Oliver	4	4					T Robredo R Schüttler	3	4
								2	B Bryan M Bryan	6	6

• 2003 Canada Masters Doubles Draw