The ATP Tour is the elite tour for professional tennis organized by the Association of Tennis Professionals.

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

In singles, Roger Federer dominated the season.

He won twelve tournaments, including three majors (Australian Open, Wimbledon and the US Open), four Masters Series titles (Indian Wells, Miami Open, Madrid Open and Rogers Cup) and the year-end championship.

The table below shows the 2006 ATP Tour schedule Winners/runners-up by country: 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 2006 season: