The 2002 Davis Cup was the 91st edition of the Davis Cup, the most important tournament between national teams in men's tennis. 130 teams entered the competition, 16 in the World Group, 28 in the Americas Zone, 32 in the Asia/Oceania Zone, and 54 in the Europe/Africa Zone. Kyrgyzstan made its first appearances in the tournament.

The Davis Cup is the premier international team event in men's tennis. It is run by the International Tennis Federation (ITF) and is contested annually between teams from over 150 competiting 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. By 2023, 155 nations entered teams into the competition.