The ATP Tour is the elite tour for professional tennis organized by the ATP.

The 2001 ATP Tour included the four Grand Slam tournaments, the Tennis Masters Cup, the Tennis Masters Series, the International Series Gold and the International Series.

This is the complete schedule of events on the 2001 ATP Tour, with player progression documented from the quarterfinal stage.

[1] List of players and titles won (Grand Slam and Masters Cup titles in bold), listed in order of most titles won: The following players won their first title: Titles won by nation: ATP rankings Following is a list of notable players (winners of a main tour title, and/or part of the ATP rankings top 100 (singles) or top 50 (doubles) for at least one week) who announced their retirement from professional tennis, became inactive (after not playing for more than 52 weeks), or were permanently banned from playing, during the 2001 season: