The 1990 WTA Tour (officially titled 1990 Kraft General Foods World Tour after its sponsor) was the elite professional tennis circuit organized by the Women's Tennis Association (WTA) for the 1990 tennis season. The 1990 WTA Tour calendar comprised the four Grand Slam tournaments, the WTA Tour Championships and the WTA Tier I, Tier II, Tier III, Tier IV and Tier V events. ITF tournaments were not part of the WTA Tour, although they award points for the WTA World Ranking.
The complete schedule of events on the 1990 calendar, with player progression documented from the quarterfinals stage.
Below are the 1990 WTA year-end rankings (November 26, 1990) in both singles and doubles competition:
<nowiki>*</nowiki> West Germany (FRG) prior to 3 October 1990.