| Doubles | |
|---|---|
| 2019 İstanbul Cup | |
| Champions |  Tímea Babos  Kristina Mladenovic |
| Runners-up |  Alexa Guarachi  Sabrina Santamaria |
| Final score | 6–1, 6–0 |
Liang Chen and Zhang Shuai were the defending champions, but chose not to participate this year.
Tímea Babos and Kristina Mladenovic won the title, defeating Alexa Guarachi and Sabrina Santamaria in the final, 6–1, 6–0.
Tímea Babos / Kristina Mladenovic (Champions)
Kirsten Flipkens / 
Johanna Larsson (First round)
Irina Bara / Mihaela Buzărnescu (First round)
Veronika Kudermetova / 
Galina Voskoboeva (First round)| First Round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | T Babos K Mladenovic | 6 | 6 | ||||||||||||||||||||||||
| WC |  Ç Büyükakçay P Özgen | 2 | 4 | 1 | T Babos K Mladenovic | 66 | 6 | [10] | |||||||||||||||||||
| A Mitu A Panova | 6 | 6 | A Mitu A Panova | 78 | 3 | [6] | |||||||||||||||||||||
 P Thombare  E Wacanno | 2 | 2 | 1 | T Babos K Mladenovic | 6 | 6 | |||||||||||||||||||||
| 3 | I Bara M Buzărnescu | 6 | 4 | [7] | C Lister  R Voráčová | 2 | 2 | ||||||||||||||||||||
| C Lister R Voráčová | 3 | 6 | [10] | C Lister R Voráčová | 6 | 6 | |||||||||||||||||||||
| A Danilina Y Sizikova | 5 | 6 | [8] | M Gasparyan  M Sakkari | 1 | 4 | |||||||||||||||||||||
| M Gasparyan M Sakkari | 7 | 3 | [10] | 1 | T Babos K Mladenovic | 6 | 6 | ||||||||||||||||||||
| WC | M Sezer İ Soylu | 65 | 6 | [9] | A Guarachi S Santamaria | 1 | 0 | ||||||||||||||||||||
 M Adamczak J Moore | 77 | 2 | [11] | M Adamczak J Moore | w/o | ||||||||||||||||||||||
| B Strýcová M Vondroušová | 6 | 6 | B Strýcová M Vondroušová | ||||||||||||||||||||||||
| 4 | V Kudermetova G Voskoboeva | 3 | 1 | M Adamczak J Moore | 3 | 4 | |||||||||||||||||||||
D Krawczyk  G Olmos | 5 | 77 | [10] | A Guarachi S Santamaria | 6 | 6 | |||||||||||||||||||||
| A Guarachi S Santamaria | 7 | 62 | [12] | A Guarachi S Santamaria | 4 | 6 | [10] | ||||||||||||||||||||
 X Knoll F Stollár | 6 | 7 | X Knoll F Stollár | 6 | 4 | [4] | |||||||||||||||||||||
| 2 | K Flipkens J Larsson | 2 | 5 | ||||||||||||||||||||||||
Kiki Bertens was the defending champion, but lost in the quarterfinals to Lourdes Domínguez Lino.
Francesca Schiavone won the title, defeating Domínguez Lino in the final, 6–1, 6–3.
Petra Cetkovská and Alexandra Panova were the defending champions but decided not to participate.
Tímea Babos and Mandy Minella won the title, defeating Petra Martić and Kristina Mladenovic in the final, 6–3, 6–1.
Sara Errani and Roberta Vinci were the defending champions, but withdrew from the semifinals against Tímea Babos and Kristina Mladenovic.
Anna-Lena Grönefeld and Květa Peschke won the title, defeating Babos and Mladenovic in the final, 6–7(7–9), 6–4, [10–5].
Hsieh Su-wei and Peng Shuai were the defending champions, but lost in the third round to Tímea Babos and Kristina Mladenovic.
Hsieh Su-wei and Peng Shuai were the defending champions, but lost in the second round to Anastasia Pavlyuchenkova and Lucie Šafářová.
Raquel Kops-Jones and Abigail Spears won the title, defeating Tímea Babos and Kristina Mladenovic in the final, 6–1, 2–0, ret.
Alla Kudryavtseva and Anastasia Rodionova were defending champions, but chose not to participate together. Rodionova partnered up with her sister Arina, but they lost in the quarterfinals to Garbiñe Muguruza and Carla Suárez Navarro. Kudryavtseva played alongside Anastasia Pavlyuchenkova, but they lost in the semifinals to Muguruza and Suárez Navarro.
Tímea Babos and Kristina Mladenovic won the title, defeating Muguruza and Suárez Navarro in the final, 6–3, 6–2.
Garbiñe Muguruza and Romina Oprandi were the defending champions, but they chose not to participate this year.
Tímea Babos and Kristina Mladenovic won the title, defeating Laura Siegemund and Maryna Zanevska in the final, 6–1, 7–6(7–5).
Květa Peschke and Katarina Srebotnik were the defending champions, but Peschke chose not to participate. Srebotnik played alongside Caroline Garcia, but lost in the semifinals to Martina Hingis and Sania Mirza.
Tímea Babos and Kristina Mladenovic won the title, defeating Hingis and Mirza in the final, 6–4, 6–3.
Tímea Babos and Kristina Mladenovic were the defending champions, but chose not to compete together. Babos played alongside Julia Görges, but lost in the semifinals to Caroline Garcia and Mladenovic.
Chuang Chia-jung and Darija Jurak won the title, defeating Garcia and Mladenovic in the final, 6–4, 6–4.
Martina Hingis and Sania Mirza were the defending champions, but lost in the second round to Margarita Gasparyan and Monica Niculescu.
Bethanie Mattek-Sands and Lucie Šafářová won the title, defeating Tímea Babos and Yaroslava Shvedova in the final, 6–3, 6–4.
Casey Dellacqua and Yaroslava Shvedova were the defending champions, but Dellacqua chose not to participate this year as she welcomed her second child. Shvedova played alongside Tímea Babos, but lost in the quarterfinals to Caroline Garcia and Kristina Mladenovic.
Garcia and Mladenovic went on to win the title, defeating Martina Hingis and Sania Mirza in the final, 6–4, 6–4.
Timea Babos and Kristina Mladenovic were the defending champions, but chose not to participate together. Babos played alongside Yaroslava Shvedova, but lost in the quarterfinals to Irina-Camelia Begu and Monica Niculescu. Mladenovic teamed up with Caroline Garcia, but lost in the quarterfinals to Andrea Hlaváčková and Lucie Hradecká.
Martina Hingis and Sania Mirza won the title, defeating Ekaterina Makarova and Elena Vesnina in the final, 6–1, 6–7(5–7), [10–3].
Caroline Garcia and Kristina Mladenovic were the defending champions, but Garcia chose not to participate this year. Mladenovic played alongside Svetlana Kuznetsova, but lost in the first round to Kiki Bertens and Johanna Larsson.
Tímea Babos and Kristina Mladenovic won the Women's Doubles tennis title at the 2018 Australian Open, defeating Ekaterina Makarova and Elena Vesnina in the final, 6–4, 6–3. It was the first Grand Slam title for Babos, who became the first Hungarian player to win a Grand Slam event since Andrea Temesvári in the 1986 French Open and the second Grand Slam title for Mladenovic.
Latisha Chan and Martina Hingis were the defending champions, but Hingis retired from professional tennis at the end of 2017. Chan played alongside Bethanie Mattek-Sands, but lost in the quarterfinals to Andrea Sestini Hlaváčková and Barbora Strýcová.
Ashleigh Barty and Casey Dellacqua were the defending champions, but Dellacqua retired from professional tennis in February 2018. Barty played alongside CoCo Vandeweghe, but lost in the first round to Tímea Babos and Kristina Mladenovic.
Samantha Stosur and Zhang Shuai won the Women's Doubles tennis title at the 2019 Australian Open, defeating defending champions Tímea Babos and Kristina Mladenovic in the final 6–3, 6–4.
Barbora Krejčíková and Kateřina Siniaková were the defending champions, but lost in the first round to Nadiia Kichenok and Abigail Spears.
Tímea Babos and Kristina Mladenovic were the defending champions and successfully defended their title, defeating Hsieh Su-wei and Barbora Strýcová in the final, 6–1, 6–3. This was Babos’ third straight WTA Finals title in doubles.
Tímea Babos and Kristina Mladenovic were the defending champions and successfully defended their title, defeating Alexa Guarachi and Desirae Krawczyk in the final, 6–4, 7–5.