World number 1 ranked female tennis players
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World number 1 ranked female tennis players is a year-by-year listing of the female tennis players who were ranked as world No. 1 by various contemporary and modern sources.
This article is about the all-time list of World number 1 ranked female tennis players. For WTA number 1 rankings since 1975, see List of WTA number 1 ranked singles tennis players.
Notes:
- The Women's Tennis Association introduced a computerized ranking system in November 1975, which is incorporated into this list.
- The International Tennis Federation's year-end number 1 classification that was introduced in 1978 is no longer named as such, and has evolved into the ITF World Champion designation and award.
- The Women's Tennis Association has awarded a WTA Player of the Year award each year since 1977.