The 2018 International Tennis Federation (ITF) Women's Circuit is a second-tier tour for women's professional tennis.

It is organized by the International Tennis Federation and is a tier below the Women's Tennis Association (WTA) Tour.

The ITF Women's Circuit includes tournaments with prize money ranging from $15,000 to $100,000.

[1] 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: To avoid confusion and double counting, these tables should be updated only after an event is completed.