The 1999 Thalgo Australian Women's Hardcourts singles was the singles event of the third edition of the Thalgo Australian Women's Hardcourts; a WTA Tier III tournament held in the Gold Coast. Ai Sugiyama was the defending champion but lost in the semifinals to Patty Schnyder.
The 1999 Copa Colsanitas singles was the singles event of the second edition of the Copa Colsanitas; a WTA Tier IV tournament and the most prestigious women's tennis tournament held in Colombia and Hispanic America. Paola Suárez was the defending champion but lost in the semifinals to Christína Papadáki.
The 1999 IGA SuperThrift Classic doubles was the doubles event of the fourteenth edition of the IGA SuperThrift Classic; a WTA Tier III tournament held in Oklahoma City, United States. Serena Williams and Venus Williams were the defending champions but did not compete that year.
The 1999 Tashkent Open doubles was the doubles event of the first edition of the Tashkent Open; a WTA Tier IV tournament and the most prestigious women's tennis tournament held in Central Asia.
Sania Mirza was the defending champion and top seed, but was stunned by Camille Pin in the second round.
The 1999 Egger Tennis Festival singles was the singles event of the twenty-ninth edition of the Egger Tennis Festival; a WTA Tier IV tournament and the second most prestigious women's tennis tournament held in Austria. Laura Montalvo and Paola Suárez were the defending champions, but they didn't compete together this year. Montalvo played with Olga Lugina as the third seed, while Suárez teamed up with Virginia Ruano Pascual as the second seed.
The 1999 Orange Prokom Open singles was the singles event of the second edition of the most prestigious women's tennis tournament held in Poland. Henrieta Nagyová was the defending champion, and the sixth seed this year, but she retired 2–6, 1–4 down against Silvija Talaja.
The 1999 SEAT Open Luxembourg singles was the singles event of the ninth edition of the most prestigious women's tennis tournament held in Luxembourg. Mary Pierce was the defending champion but she did not compete in this year.
The 1999 Pattaya Women's Open singles was the tennis singles event of the tenth edition of the most prestigious tournament in Thailand. Qualifier and former World No. 4 Magdalena Maleeva won the title, defeating Anne Kremer in the final to claim her first in four years.
The 1999 Wismilak International doubles was the doubles event of the fifth edition of the most prestigious women's tennis tournament held in Southeast Asia. It was not played the previous year, so there was no defending champion.
Jana Novotná was the defending champion, but she retired from tennis earlier in the year.
Yan Zi and Zheng Jie were the defending champions, but did not participate.
Monica Seles was the defending champion, but did not compete this year.
Jennifer Hopkins and Jelena Kostanić were the defending champions. Hopkins did not compete.
The women's singles of the 2005 ECM Prague Open tournament was played on clay in Prague, Czech Republic.
Paola Suárez was the defending champion, but chose not to compete in 2004.
Angelique Widjaja was the defending champion, but lost to Ľubomíra Kurhajcová in the second round.
Marie-Gaïané Mikaelian was the defending champion from 2002, but she chose not to compete in 2003.
Silvia Farina Elia and Iroda Tulyaganova were the defending champions, but both players decided to focus on the singles tournament. Farina Elia ended up winning that title.
Åsa Carlsson 
Erika deLone 
