Bianca Andreescu won the women's singles tennis title at the 2019 Canadian Open after Serena Williams retired in the final due to back spasms, with the scoreline at 3–1. Andreescu became the first Canadian to win the event since Faye Urban in 1969.
Simona Halep was the defending champion, but retired in the quarterfinals against Marie Bouzková.
Naomi Osaka regained the WTA No. 1 singles ranking after Ashleigh Barty lost in the second round and Karolína Plíšková lost in the quarterfinals to Andreescu.
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 loser Zhang Shuai
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
External links Main draw Qualifying draw