Nadia Petrova was the defending champion, but withdrew with a left hip injury before the tournament began.
Donna Vekić was the defending champion, but chose not to participate this year.
Flavia Pennetta was the defending champion, but lost in the quarterfinals to Sabine Lisicki.
Serena Williams was the two-time defending champion and successfully defended her title, beating Carla Suárez Navarro in the final, 6–2, 6–0. Williams won the title for the record 8th time in her career. This is also the second to last WTA tournament played by Nicole Vaidišová, who received a wildcard and lost to Simona Halep in the second round.
Caroline Wozniacki was the defending champion, but she chose not to participate this year.
Angelique Kerber was the defending champion, but retired in the semifinals against Sloane Stephens.
Belinda Bencic was the defending champion, but lost in the second round to Elena Vesnina.
Serena Williams was the two-time defending champion, but withdrew before the tournament began due to injury.
Belinda Bencic was the defending champion, but withdrew with a left wrist injury before the tournament began.
Svetlana Kuznetsova was the defending champion and successfully defended her title, defeating Daria Gavrilova in the final, 6–2, 6–1.
Victoria Azarenka was the defending champion, but did not participate this year as she was on maternity leave.
The 2017 Internationaux de Strasbourg was a professional tennis tournament played on clay courts. It was the 31st edition of the tournament and part of the International-level tournament category of the 2017 WTA Tour. It took place at the Tennis Club de Strasbourg in Strasbourg, France, on 22-28 May 2017.
Madison Keys was the defending champion, but withdrew with a wrist injury before the tournament began.
Simona Halep was the defending champion, but lost in the semifinals to Elina Svitolina.
Daria Kasatkina was the defending champion, but lost in the quarterfinals to Julia Görges.
Samantha Stosur was the defending champion but lost in the quarterfinals to Dominika Cibulková.
Garbiñe Muguruza was the defending champion, but lost in the second round to Lesia Tsurenko.
Daria Gavrilova was the defending champion, but lost to Aryna Sabalenka in the second round.
Ashleigh Barty defeated Karolína Plíšková in the final, 7–6(7–1), 6–3 to win the women's singles tennis title at the 2019 Miami Open. It was Barty's first WTA Premier Mandatory title. She entered the top 10 in the WTA rankings for the first time with the win.
Caroline Wozniacki was the defending champion, but lost in the third round to Aryna Sabalenka in a rematch of the previous year's final.
Samantha Stosur 
