This is a list of the tournaments played in the 2005 season of Men's tennis (calendar year), including ATP events and ITF events (This does not include the ITF Men's Circuit, only the ATP circuit). Changes were made to match format during this season. The third set of doubles matches was no longer played as a traditional set. Instead it was played as a match tie break first to 10 and clear by 2, to decide the winner.

Calendar

January

February

March

April

May

June

July

August

September

October

November

Statistics

Entry rankings

Note: Mariano Puerta received a ranking penalty at the end of the 2005 season. His ranking dropped from 13 to 56.

Notable breakthrough players

The 2005 season saw the debut of future world No. 1 Novak Djokovic into the main ATP Tour. Ranked world no. 186 at the beginning of the year, he qualified for the Australian Open but was defeated heavily in the first round by the eventual champion Marat Safin. He then recorded his first Grand Slam match victory at the French Open, defeating Robby Ginepri in the first round, before losing to Guillermo Coria in the second. He then reached the third round at both Wimbledon and the US Open, losing to Sébastien Grosjean and Fernando Verdasco, respectively. Djokovic would finish 2005 ranked world no. 78. Future world No. 1 Andy Murray also made his breakthrough into the ATP Tour in 2005. Murray began the season ranked world No. 407 and was still participating in the junior tour, where he reached the semifinals of the French Open but lost to eventual champion Marin Čilić. He was awarded a wildcard into the main draw at Wimbledon, where he defeated George Bastl in the first round, and fourteenth seed Radek Štěpánek in the second, before losing to former finalist David Nalbandian in the third, despite having gone two sets to love up. He reached his first ATP Tour level final in October, at the 2005 Thailand Open as a wildcard, losing to Roger Federer; his run saw him enter the ATP's Top 100 for the first time. He eventually finished the season ranked world No. 63.

Retirements

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 2002 season: