Martina Hingis defeated the four-time defending champion Monica Seles in the final, 6–4, 6–4 to win the women's singles tennis title at the 1999 Canadian Open. Seles' match win-streak was an Open Era tournament record.

Seeds The top eight seeds received a bye to the second round.

Draw

Finals

Top half

Section 1

Section 2

Bottom half

Section 3

Section 4

References 1999 du Maurier Open draw