List of WTA number 1 ranked singles tennis players
The WTA rankings are the Women's Tennis Association's (WTA) merit-based system for determining the rankings in women's tennis. The top-ranked player is the player who, over the previous 52 weeks, has garnered the most ranking points on the WTA Tour. Points are awarded based on how far a player advances in tournaments and the category of those tournaments. The WTA has used a computerized system for determining the rankings since November 3, 1975. Since 1975, 28 women have been ranked No. 1 by the WTA, of  which 14 have been year-end No. 1. WTA No. 1 ranked singles players. The rankings are sourced by the "WTA Media Guide" and the WTA website (which usually revises its rankings every Sunday night or Monday morning, except when tournament finals are postponed). Weeks at No. 1 by decade. 1970s*. <nowiki>*</nowiki> — Starting November 1975 2020s. WTA rankings were frozen from March 23, 2020 to August 9, 2020.