2017–18 PSA World Tour

The 2017–18 PSA World Tour is the international squash tour organised circuit organized by the Professional Squash Association (PSA) for the 2017 squash season. It's the 3rd PSA season since the merger of PSA and WSA associations in 2015.

The most important tournaments in the series are the Men's and Women's PSA World Championship. The tour also features three categories of regular events - PSA World Series, which feature the highest prize money and the best fields; PSA 25-100 (formerly International) and PSA 5-15 (formerly Challenger). In the middle of the year, the PSA World Series tour is concluded by the Men's and Women's PSA World Series Finals in Dubai, the World Series-ending championships for the top 8 rated players. Players' performances in the tour are rated by World Rankings for men and women.

September
(*) – Seniors tournament.

March
‡: Not included in the PSA calendar.

May
‡: Not included in the PSA calendar. (Played in a round-robin format).

July
‡Although listed on PSA website as a both men's/women's tournament, women's draw was not played due to low number of registered players.

Statistical information
The players/nations are sorted by:
 * 1) Total number of titles;
 * 2) Cumulated importance of those titles;
 * 3) Alphabetical order (by family names for players).

Retirements
Following is a list of notable players (winners of a main tour title, and/or part of the PSA Men's World Rankings and Women's World Rankings top 30 for at least one month) who announced their retirement from professional squash, became inactive, or were permanently banned from playing, during the 2017 season: