Victoria Azarenka defeated Serena Williams in the final, 2–6, 6–2, 7–6(8–6) to win the women's singles tennis title at the 2013 Cincinnati Masters. It was Azarenka's second win against Williams during the year, and Williams' fourth and last loss of the year.
Li Na was the defending champion, but lost to Williams in the semifinals.
This marked the final professional appearance of reigning Wimbledon champion Marion Bartoli; she lost to Simona Halep in the second round.
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 draw
Seeds
Qualifiers
Lucky loser Monica Niculescu
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