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 Chairperson is Katrina Adams.
The Iran Davis Cup team represent Iran in Davis Cup tennis competition and are governed by the Tennis Federation of Iran.
The Tajikistan men's national tennis team represents Tajikistan in Davis Cup tennis competition and are governed by the National Tennis Federation of the Republic of Tajikistan.
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 2022 Russia invasion of Ukraine, the International Tennis Federation suspended Russia from Billie Jean King Cup competitions.
The Spain women's national tennis team represents Spain in Fed Cup tennis competition and are governed by the Real Federación Española de Tenis. They currently compete in World Group II. The team Captain, as of 2018, is former professional player Anabel Medina Garrigues.
The Croatia women's national tennis team represents Croatia in Fed Cup tennis competition and are governed by the Croatian Tennis Association. They currently compete in the Europe/Africa Zone Group I.
The Colombia women's national tennis team represents Colombia in Fed Cup tennis competition and are governed by the Federación Colombiana de Tenis. They currently compete in the Americas Zone of Group I.
The India Fed Cup team represents India in the WTA & ITF Fed Cup professional tennis competition and are governed by the All India Tennis Association. They will compete in the Asia/Oceania Zone of Group I in 2016.
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 2022 Russia invasion of Ukraine, the International Tennis Federation suspended Russia and Belarus from Billie Jean King Cup competitions.
The Bulgaria women's national tennis team represents Bulgaria in Fed Cup tennis competition and are governed by the Bulgarian Tennis Federation.
The Luxembourg Fed Cup team represents Luxembourg in Fed Cup tennis competition and are governed by the Fédération Luxembourgeoise de Tennis. They currently compete in the Europe/Africa Zone of Group II.
The Norway women's national tennis team represents Norway in Billie Jean King Cup tennis competition and are governed by the Norges Tennisforbund. They compete in the Europe/Africa Zone of Group I.
The South Africa Fed Cup team represents South Africa in Fed Cup tennis competition and are governed by the South African Tennis Association. They currently compete in the Europe/Africa Zone of Group II.
The Uruguay Fed Cup team represents Uruguay in Fed Cup tennis competition and are governed by the Asociación Uruguaya de Tenis. They currently compete in the Americas Zone Group II.
The Ireland Fed Cup team represents Ireland in Fed Cup tennis competition and are governed by Tennis Ireland. They currently compete in the Europe/Africa Zone of Group III.
The Indonesia Billie Jean King Cup team represents Indonesia in Billie Jean King Cup tennis competition and are governed by the Indonesian Tennis Association. They have not competed in the World Groups since 2006.
The Botswana Fed Cup team represents Botswana in Fed Cup tennis competition and are governed by the Botswana Tennis Association. They have not competed since 2006.
The Zimbabwe Fed Cup team represents Zimbabwe in Fed Cup tennis competition and are governed by Tennis Zimbabwe. They have not competed since 2008.
The Vietnam Fed Cup team represents Vietnam in Fed Cup tennis competition and are governed by the Vietnam Tennis Federation. They have not competed since 2014.
The Kosovo Fed Cup team represents Kosovo in Fed Cup tennis competition and are governed by the Tennis Federation of Kosovo. They took part in the Fed Cup for the first time in 2016, competing in the Europe/Africa Zone Group III.
