The Great Britain Davis Cup team is the men's national tennis team and has represented the United Kingdom internationally since 1900. Organised by the Lawn Tennis Association (LTA), it is one of the 50 members of International Tennis Federation's European association. The United Kingdom team's performance has been inconsistent; it enjoyed its most successful periods in the 1910s and the 1930s, and has seen a resurgence in recent years.
The United States of America's Davis Cup Team represents the United States in Davis Cup tennis competition, and is governed by the United States Tennis Association.
The Australian Davis Cup team is the second most successful team ever to compete in the Davis Cup, winning the coveted title on 28 separate occasions, second behind the United States with 32.
The Croatia Davis Cup team represents Croatia in Davis Cup tennis competition and is governed by the Croatian Tennis Association. It is captained by Željko Krajan.
The Spain Davis Cup team is the men's national tennis team and has represented Spain internationally since 1920. Organised by the Real Federación Española de Tenis (RFET), it is one of the 50 members of International Tennis Federation's European association.
The Great Britain Fed Cup team represents the United Kingdom in Fed Cup tennis competition and are governed by the Lawn Tennis Association. They currently compete in the Europe/Africa Zone of Group I.
The India Davis Cup team represents India in Davis Cup tennis competition and are governed by the All India Tennis Association.
The France Davis Cup team represents France in Davis Cup tennis competition, and is governed by the Fédération Française de Tennis. France competed in their first Davis Cup in 1904. France is the third most successful nation, with ten wins. Their most recent title came in 2017 .
The United States Fed Cup team is the most successful national team in Fed Cup competition. The team has won 18 titles and finished second a further 11 times, out of 54 participations.
The Czech Republic Fed Cup team is the representative national team of the Czech Republic in Fed Cup competition. The Czech Republic team in its current incarnation began competing in 1993. It is seen as the primary successor to the Czechoslovak team, and not Slovakia, even though the Czechoslovak team included both Czech and Slovak players.
The Argentina Davis Cup team represents Argentina in Davis Cup tennis competition and is governed by the Asociación Argentina de Tenis. As of 2016, the team has competed in the World Group since 2002 and reached the finals five times, winning the cup for the first time in the 2016 edition by defeating Croatia in the final. Argentina is currently #1 in the ITF Davis Cup rankings. Argentina is the only South American team to have lifted the trophy
The Switzerland Davis Cup team represents Switzerland in the Davis Cup tennis competition and is governed by Swiss Tennis.
The Serbian Davis Cup team represents Serbia in the Davis Cup tennis competition. From 5 June 2006 team is playing under name of Serbia, following the split of Yugoslavia.
The Canada Davis Cup team represents Canada in Davis Cup tennis competition and is governed by Tennis Canada.
The Australia Fed Cup team represents Australia in international women's tennis and is directed by Tennis Australia. The team played in the first ever tournament in 1963, and is one of four teams that has taken part in every single edition since.