The 2009 Canadian Open (also known as the 2009 Rogers Masters presented by National Bank and 2009 Rogers Cup for sponsorship reasons) was a tennis tournament played on outdoor hard courts.

It was the fourth event for both the men and women on the 2009 US Open Series.

The following players received wildcards into the singles main draw The following players received entry from the qualifying draw: The following player received the lucky loser spot: The following players received wildcards into the singles main draw The following players received entry from the qualifying draw: Andy Murray defeated Juan Martín del Potro, 6–7(4–7), 7–6(7–3), 6–1.

Mahesh Bhupathi / Mark Knowles defeated Max Mirnyi / Andy Ram, 6–4, 6–3.

Nuria Llagostera Vives / María José Martínez Sánchez defeated Samantha Stosur / Rennae Stubbs, 2–6, 7–5, [11–9].