Hsieh Su-wei is a Taiwanese professional tennis player. On 25 February 2013, she reached a career-high singles ranking of world No. 23, and on 12 May 2014, she reached world No. 1 in the doubles rankings. Hsieh has won three singles and 34 doubles titles on the WTA Tour, one WTA 125 doubles title, 27 singles and 23 doubles titles on the ITF Circuit, seven medals at the Asian Games, one gold and one bronze medal at the 2005 Summer Universiade, and has amassed over $10 million in prize money. She has spent a total of 47 weeks with the top doubles ranking, the longest tenure by a tennis player from East Asia. Hsieh is the highest-ranked Taiwanese player in history, in both singles and doubles.
Shuko Aoyama is a Japanese professional tennis player who specializes in doubles.
Gabriela "Gaby" Dabrowski is a Canadian professional tennis player. She reached her best singles ranking of world No. 164 by the WTA on November 3, 2014, and her highest doubles ranking of world No. 4 on July 11, 2022. A three-time Grand Slam champion, she won the 2023 US Open doubles title partnering Erin Routliffe, and also the 2017 French Open mixed-doubles title with Rohan Bopanna, becoming the first Canadian woman to win a senior Grand Slam title and the 2018 Australian Open with Mate Pavić.
Luisa Veras Stefani is a Brazilian professional tennis player, and the first Brazilian woman to reach the WTA top 10. She reached the milestone on 1 November 2021 when she rose to world No. 9 in doubles. On 20 May 2019, she reached a career-high singles ranking of world No. 431. She had a career-high combined junior ranking of No. 10 on 30 March 2015.
Ena Shibahara is an American-born Japanese professional tennis player who specializes in doubles.
Giuliana Marion Olmos Dick is a Mexican professional tennis player. Olmos, who graduated from the University of Southern California in 2016, has a career-high singles ranking of world No. 343 by the WTA, set on 4 March 2019, and a career-high doubles ranking of world No. 6, achieved on 10 April 2023. She has won six doubles titles on the WTA Tour, as well as four singles and eleven doubles titles on the ITF Circuit. With her partner Desirae Krawczyk, she became the first Mexican player in the Open Era to reach a WTA Tour final, at the 2018 Monterrey Open. In 2019, she became the first Mexican player to win a title on WTA Tour, taking the doubles crown at the Nottingham Open. In 2020, she became the first Mexican woman to win the Mexican Open, also with Krawczyk. In 2022, she became the first Mexican woman to enter the top 10 in the WTA rankings in either singles or doubles.
The 2021 WTA Tour was the elite professional tennis circuit organised by the Women's Tennis Association (WTA) for the 2021 tennis season. The 2021 WTA Tour calendar comprises the Grand Slam tournaments, the WTA 1000 tournaments, the WTA 500 tournaments, the WTA 250 tournaments, the Billie Jean King Cup, and the year-end championships. Also included in the 2021 calendar are the Summer Olympic Games, which were rescheduled from 2020.
Daria Gavrilova and Ellen Perez were the defending champions but Gavrilova chose not to participate. Perez played alongside Storm Sanders but lost in the first round to Nicole Melichar and Demi Schuurs.
Defending champions Tímea Babos and Kristina Mladenovic defeated Alexa Guarachi and Desirae Krawczyk in the final, 6–4, 7–5 to win the women's doubles tennis title at the 2020 French Open.
Elise Mertens and Aryna Sabalenka defeated Barbora Krejčíková and Kateřina Siniaková in the final, 6–2, 6–3, to win the women's doubles tennis title at the 2021 Australian Open. It was their second major doubles title as a team, after the 2019 US Open. With the win, Sabalenka claimed the world No. 1 doubles ranking.
Two-time defending champion Barbora Krejčíková and her partner Rajeev Ram defeated Samantha Stosur and Matthew Ebden in the final, 6–1, 6–4 to win the mixed doubles tennis title at the 2021 Australian Open. It was the pair's second major mixed doubles title as a team, after their first at the 2019 Australian Open. They saved a match point en route to the title, in the second round against Ena Shibahara and Ben McLachlan.
Hsieh Su-wei and Barbora Strýcová were the two-time defending champions, but they chose not to participate.
Shuko Aoyama and Ena Shibahara defeated Hayley Carter and Luisa Stefani in the final, 6–2, 7–5, to win the women's doubles tennis title at the 2021 Miami Open. Aoyama and Shibahara's first WTA 1000 victory earned them their third title of the year and made them the first Japanese champions in Miami since Ai Sugiyama in 2008.
Barbora Krejčíková and Kateřina Siniaková defeated Gabriela Dabrowski and Demi Schuurs in the final, 6–4, 6–3 to win the women's doubles tennis title at the 2021 Madrid Open. It marked the duo's seventh career WTA Tour doubles title together, as well as Krejčíková's eighth individual doubles title and Siniaková's 10th.
Defending champion Hsieh Su-wei and her partner, Elise Mertens, defeated Veronika Kudermetova and Elena Vesnina in the final, 3–6, 7–5, 9–7, to win the ladies' doubles tennis title at the 2021 Wimbledon Championships. The pair saved two championship points en route to their first major title together.
Samantha Stosur and Zhang Shuai defeated Coco Gauff and Caty McNally in the final, 6–3, 3–6, 6–3 to win the women's doubles title at the 2021 US Open. It was Stosur's fourth major title in women's doubles and eighth major overall, as well as Zhang's second major title; this was the team's second major title, following the 2019 Australian Open. This was the first major final for Gauff and for McNally.
Hsieh Su-wei and Elise Mertens defeated Veronika Kudermetova and Elena Rybakina in the final, 7–6(7–1), 6–3, to win the women's doubles tennis title at the 2021 Indian Wells Masters. It was Hsieh's third title at the tournament and her 30th career doubles title overall. Mertens successfully defended her title to win for a second time after she first won the tournament in 2019 with Aryna Sabalenka, who chose not to defend her title.
Defending champions Barbora Krejčíková and Kateřina Siniaková defeated Shuko Aoyama and Ena Shibahara in the final, 6–4, 6–3 to win the women's doubles tennis title at the 2023 Australian Open. It was their second Australian Open title and seventh major title together, and they extended their winning streak at the majors to 24 matches with the win, dating back to the 2022 Australian Open.
Victoria Azarenka and Beatriz Haddad Maia defeated Coco Gauff and Jessica Pegula in the final, 6–1, 6–4 to win the women's doubles tennis title at the 2023 Madrid Open.
Gabriela Dabrowski and Erin Routliffe defeated Laura Siegemund and Vera Zvonareva in the final, 7–6(11–9), 6–3 to win the women's doubles tennis title at the 2023 US Open. Dabrowski became the first Canadian to win a women's doubles major title, and Routliffe became the first New Zealander to win a US Open title.
United States 
