2023 ATP Challenger Tour

The Association of Tennis Professionals (ATP) Challenger Tour in 2023 was the secondary professional tennis circuit organized by the ATP. The 2023 ATP Challenger Tour calendar comprised 196 tournaments, with prize money ranging from $40,000 up to $220,000. It was the 46th edition of Challenger tournaments cycle and 15th under the name of Challenger Tour.

Schedule
This was the complete schedule of events on the 2023 calendar with player progression documented from the quarterfinals stage.

Cancelled tournaments
The following tournaments were formally announced by the ATP before being cancelled.

Statistical information
These tables present the number of singles (S) and doubles (D) titles won by each player and each nation during the season. The players/nations are sorted by: 1) total number of titles (a doubles title won by two players representing the same nation counts as only one win for the nation); 2) a singles > doubles hierarchy; 3) alphabetical order (by family names for players).

The ATP announced in March 2022 that players representing Russia or Belarus would not be able to compete under their respective country's flag due to the 2022 Russian invasion of Ukraine. These players competed under no nationality, and any titles won by these players weren't counted towards a country's tally of total titles.

Point distribution
Points are awarded as follows: