The 2013 ATP World Tour was the global elite professional tennis circuit organized by the Association of Tennis Professionals (ATP) for the 2013 tennis season. The 2013 ATP World Tour calendar comprises the Grand Slam tournaments (supervised by the International Tennis Federation (ITF)), the ATP World Tour Masters 1000, the ATP World Tour 500 series, the ATP World Tour 250 series, the Davis Cup (organized by the ITF) and the ATP World Tour Finals. Also included in the 2013 calendar is the Hopman Cup, which was organized by the ITF and does not distribute ranking points.

This is the complete schedule of events on the 2013 calendar, with player progression documented from the quarterfinals stage.

These tables present the number of singles (S), doubles (D), and mixed doubles (X) titles won by each player and each nation during the season, within all the tournament categories of the 2013 ATP World Tour: the Grand Slam tournaments, the ATP World Tour Finals, the ATP World Tour Masters 1000, the ATP World Tour 500 series, and the ATP World Tour 250 series. The players/nations are sorted by:

The following players won their first main circuit title in singles, doubles, or mixed doubles:

The following players defended a main circuit title in singles, doubles, or mixed doubles:

These are the ATP rankings of the top 20 singles players, doubles players, and the top 10 doubles teams on the ATP Tour, at the current date of the 2013 season. Players on a gold background have qualified for the Year-End Championships.

as of 17 November 2013^[update]

¹ Wild cards who lose at their first round matches at Grand Slam and ATP World Tour Masters 1000 events are not awarded ranking points.