The Billie Jean King Cup is the premier international team competition in women's tennis, launched as the Federation Cup in 1963 to celebrate the 50th anniversary of the International Tennis Federation (ITF). The name was changed to the Fed Cup in 1995, and changed again in September 2020 in honor of former World No. 1 Billie Jean King. The Billie Jean King Cup is the world's largest annual women's international team sports competition in terms of the number of nations that compete. The current chair is Katrina Adams.
The Russia women's national tennis team represented Russia in Billie Jean King Cup tennis competition and are governed by the Russian Tennis Federation. They compete in the World Group. Following the 2020 ban of Russia by the World Anti-Doping Agency (WADA) and the Court of Arbitration for Sport (CAS), it competed and won the 2020–21 Billie Jean King Cup under the RTF flag and name. After the Russian invasion of Ukraine, the International Tennis Federation suspended Russia from Billie Jean King Cup competitions.
The Belarus women's national tennis team represented Belarus in Billie Jean King Cup tennis competition and are governed by the Belarus Tennis Association. They compete in the World Group. After the Russian invasion of Ukraine, the International Tennis Federation suspended Russia and Belarus from Billie Jean King Cup competitions.
Isabella Shinikova is a Bulgarian tennis player.
Demi Schuurs is a Dutch professional tennis player who specializes in doubles. On 22 October 2018, she peaked at No. 7 in the doubles rankings. In February 2015, she reached a career-high singles ranking of world No. 512.
Storm Hunter is an Australian professional tennis player. She reached world No. 1 in doubles on 6 November 2023, becoming the third Australian woman to hold the top spot. She also has a career-high singles ranking of world No. 119 on 18 October 2021.
Veronika Eduardovna Kudermetova is a Russian professional tennis player. She has a career-high singles ranking of world No. 9, achieved on 24 October 2022, and a best WTA doubles ranking of No. 2, reached on 6 June 2022. She also has won three WTA 1000 titles, and won the 2022 WTA Finals with Elise Mertens. In addition, she reached the doubles final of Wimbledon in 2021, with Elena Vesnina.
Valentini Grammatikopoulou is a Greek tennis player. On 22 August 2022, she reached her best singles ranking of world No. 143. On 15 July 2024, she peaked at No. 97 in the WTA doubles rankings. She has won a singles and a doubles title on the WTA Challenger Tour, and in addition, 15 singles and 32 doubles titles on the ITF Women's Circuit.
Nao Hibino is a Japanese professional tennis player. She has been ranked as high as No. 56 in singles and No. 43 in doubles by the WTA. Hibino has won three singles titles and three doubles titles on the WTA Tour. She has also won nine singles and eleven doubles tournaments on the ITF Women's World Tennis Tour.
Viktória Hrunčáková is a Slovak professional tennis player. She has been ranked as high as No. 43 in singles and No. 27 in doubles in the world by the Women's Tennis Association (WTA). Hrunčáková has won five doubles titles on the WTA Tour and 25 titles on the ITF Circuit. She also ended runner-up at the Premier-level 2019 St. Petersburg Trophy and at the 2021 Yarra Valley Classic in doubles, along with Anna Kalinskaya.
Liudmila Dmitrievna Samsonova is a Russian professional tennis player. She has career-high WTA rankings of No. 12 in singles and No. 40 in doubles.
Gergana Topalova is a Bulgarian tennis player. She has career-high WTA rankings of 210 in singles and 388 in doubles. Topalova is the current No. 2 Bulgarian female player.
The 2020–21 Billie Jean King Cup was the 58th edition of the international women's tennis team's tournament and the first to be styled as the Billie Jean King Cup.
The 2020 Billie Jean King Cup qualifying round was played on 7–8 February 2020. The eight winners of this round qualified for the 2020 Billie Jean King Cup Finals in Budapest.
The finals, formerly known as World Group, is the highest level of Billie Jean King Cup competition in 2020–21. It was originally scheduled to be played on indoor clay courts at the László Papp Budapest Sports Arena in Budapest, Hungary, from 14 until 19 April 2020, but was postponed due to COVID-19. The new venue was established to be the O2 Arena, in Prague, on indoor hard court. The ties were contested in a best-of-three rubbers format and are played on one day. There were two singles matches, followed by a single doubles tie.
The 2022 Billie Jean King Cup qualifying round was played on 15 and 16 April 2022. The nine winners of this round will qualify for the 2022 Billie Jean King Cup Finals.
Switzerland defeated Australia 2–0 in the tennis final of the 2022 Billie Jean King Cup. It was the 59th edition of the women's international team competition.
This is the list of the main career statistics of professional Russian tennis player Veronika Kudermetova. She left her mark in both singles and doubles events, her achievements happened on many levels. On the WTA rankings, she get to her both career-highs in 2022; in singles, to the place of No. 9 while in doubles, she became world No. 2. She has won two singles titles and eight doubles titles on the WTA Tour. In addition, she has won five WTA Challenger titles, as well as 20 ITF Circuit titles. She is also active in playing in international tournaments for Russia, winning one Billie Jean King Cup title and reaching fourth place at the Summer Olympics in doubles event alongside Elena Vesnina.
Canada defeated Italy in the tennis final, 2–0, in winning the 2023 Billie Jean King Cup. This was Canada's first final and title at the Billie Jean King Cup.
Canada defeated Italy in the final, 2–0, in capturing the 2023 Billie Jean King Cup. This was Canada's first final and title at the Billie Jean King Cup. Switzerland was the defending champion, but was eliminated in the round-robin stage, losing both their ties.
Switzerland 
