Belinda Bencic won the women's singles tennis title at the 2015 Canadian Open after Simona Halep retired in the final, with scoreline at 7–6(7–5), 6–7(4–7), 3–0. Bencic defeated six major finalists in succession en route to her first WTA Tour title. At 18 years and 23 weeks of age, Bencic became the youngest woman to win the tournament, surpassing Ana Ivanovic's record from 2006.
Agnieszka Radwańska was the defending champion, but lost in the quarterfinals to Halep.
Seeds The top eight seeds received a bye into the second round.
Draw
Finals
Top half
Section 1
Section 2
Bottom half
Section 3
Section 4
Qualifying
Seeds
Qualifiers
Lucky losers Julia Görges
Qualifying draw
First qualifier
Second qualifier
Third qualifier
Fourth qualifier
Fifth qualifier
Sixth qualifier
Seventh qualifier
Eighth qualifier
Ninth qualifier
Tenth qualifier
Eleventh qualifier
Twelfth qualifier
References
Main Draw Qualifying Draw