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This is a list of the women’s singles tennis champions at the Grand Slam tournaments, the WTA championships, the Olympic Games, and the WTA Tier I/Premier (Premier Mandatory and Premier Five)/1000 tournaments since 1990.
- The leaders in these tournaments since 1990 are (5+ total titles):
- Important note: by setting 1990 as the cut-off point, this list excludes many notable champions in high level tournaments from the previous years. High category tournaments equivalent to Tier 1/Premier/WTA 1000 existed before 1990, and the Grand Slam tournaments, Olympic Games and WTA Finals have been held since 1884, 1900 and 1972, respectively. See the all-time records article for records spanning the sport’s history. Totals including titles won before 1990 are in brackets.
Active players and records since 1990 are denoted in bold.
- Back-to-back titles in a calendar year (three minimum).
- Currently active calendar combinations in bold.


