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 United States competed in the inaugural Davis Cup against Great Britain in 1900. They are the most successful team ever to compete in the Davis Cup, winning the coveted title on 32 separate occasions closely followed by Australia with 28 victories.
The Davis Cup is the premier international team event in men's tennis. It is organised by the International Tennis Federation (ITF) and contested annually between teams from over 150 competing countries, making it the world's largest annual team sporting competition. It is described by the organisers as the "World Cup of Tennis" and the winners are referred to as the world champions. The competition began in 1900 as a challenge between Great Britain and the United States. Initially titled the International Lawn Tennis Challenge, it soon became known metonymically after the trophy donated by Dwight F. Davis; the name was officially changed after Davis' death in 1945. By 2023 155 nations entered teams into the competition.
The most successful country over the history of the competition is the United States (winning 32 titles and finishing as runners-up 29 times). The most recent champions are Italy, who beat Spain to win their fourth title (and third consecutive one) in 2025.