The United States men's national tennis team represents the United States in Davis Cup tennis competition, and is governed by the United States Tennis Association.
The Australia 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 Germany Davis Cup team represents Germany in Davis Cup tennis competition and are governed by the Deutscher Tennis Bund. As East Germany never participated in the Davis Cup, and the Deutscher Tennisbund remained the same organization throughout the century, the West German Davis Cup team is included in this article.
The Spain men's national tennis team 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 Russia men's national tennis team until it was suspended in 2022 represented Russia in Davis Cup tennis competition. It is governed by the Russian Tennis Federation. The team started playing in 1993.
The Argentina men's national tennis 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 #15 in the ITF Davis Cup rankings.
The Croatia men's national tennis team represents Croatia in the Davis Cup and is governed by the Croatian Tennis Association. It is captained by Vedran Martić.
The Belarus men's national tennis team represented Belarus in Davis Cup tennis competition until it was suspended in 2022, due to the 2022 Russian invasion of Ukraine. They are governed by the Belarus Tennis Association. In 2007, Belarus were defeated in the 2007 Davis Cup World Group Play-offs by Peru, and therefore was relegated from the World Group.
The Czech Republic men's national tennis team represents the Czech Republic in the Davis Cup and is governed by the Czech Tennis Federation. The Czech team was started in 1993, following the break-up of Czechoslovakia.
The Italy men's national tennis team represents Italy in Davis Cup tennis competition and are governed by the Federazione Italiana Tennis. Italy won the Davis Cup in 1976, and finished as runners-up six times. They currently compete in the World Group. They last competed in the highest level in 2000, but winning 3–0 against Chile, on September 16, 2011, won again a pass for the World Group.
The Netherlands Davis Cup team represents the Netherlands in Davis Cup tennis competition and are governed by the Royal Dutch Lawn Tennis Association.
The Portugal men's national tennis team represents Portugal in Davis Cup tennis competition and is governed by the Federação Portuguesa de Ténis.
The Jamaica men's national tennis team represents Jamaica in Davis Cup tennis competition and are governed by Tennis Jamaica.
The Iran Davis Cup team represent Iran in Davis Cup tennis competition and are governed by the Tennis Federation of Iran.
The Bulgaria men's national tennis team represents Bulgaria in Davis Cup tennis competition and is governed by the Bulgarian Tennis Federation.
The Cyprus Davis Cup team represents Cyprus in Davis Cup tennis competition and are governed by the Cyprus Tennis Federation.
The Lithuania men's national tennis team represents Lithuania in Davis Cup tennis competition and are governed by the Lithuanian Tennis Association.
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 Bulgaria women's national tennis team represents Bulgaria in Billie Jean King Cup tennis competition and are governed by the Bulgarian Tennis Federation.
The Iran Fed Cup team represents Iran in Fed Cup tennis competition and are governed by the Tennis Federation of Iran. They currently compete in the Asia/Oceania Zone of Group II.
