The 2016 ATP World Tour calendar comprised the Grand Slam tournaments (supervised by the International Tennis Federation (ITF)), the ATP World Tour Masters 1000s, 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 2016 calendar were the tennis events at the 2016 Summer Olympics and Hopman Cup, neither of which distributed ranking points.

This is the complete schedule of events on the 2016 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 2016 ATP World Tour: the Grand Slam tournaments, the tennis event at the Rio Summer Olympics, the ATP World Tour Finals, the ATP World Tour Masters 1000, the ATP World Tour 500 series, and the ATP World Tour 250 series.

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 2016 season: