| Doubles | |
|---|---|
| 2023 Koper Open | |
| Champions |  Irina Bara Andreea Mitu |
| Runners-up |  Suzan Lamens  Kaylah McPhee |
| Score | 6–2, 6–3 |
Xenia Knoll and Samantha Murray Sharan were the defending champions [1] but chose not to participate.
Irina Bara and Andreea Mitu won the title, defeating Suzan Lamens and Kaylah McPhee in the final, 6–2, 6–3.
Aliona Bolsova / 
Weronika Falkowska (semifinals)
Beatrice Gumulya / 
Peangtarn Plipuech (first round)
Amina Anshba / Polina Kudermetova (quarterfinals)
Veronika Erjavec / 
Lina Gjorcheska (first round)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | A Bolsova W Falkowska | 6 | 6 | ||||||||||||||||||||||||
 T Morderger Y Morderger | 2 | 2 | 1 | A Bolsova W Falkowska | 6 | 6 | |||||||||||||||||||||
 N Brancaccio  A Nagy | 6 | 6 | N Brancaccio A Nagy | 2 | 0 | ||||||||||||||||||||||
| N Kovačič P Petelinšek | 1 | 0 | 1 | A Bolsova W Falkowska | 1 | 6 | [5] | ||||||||||||||||||||
| 4 | V Erjavec L Gjorcheska | 1 | 4 | S Lamens K McPhee | 6 | 2 | [10] | ||||||||||||||||||||
| S Lamens K McPhee | 6 | 6 | S Lamens K McPhee | 6 | 6 | ||||||||||||||||||||||
 B Cengiz İ Öz | 6 | 6 | B Cengiz İ Öz | 3 | 4 | ||||||||||||||||||||||
| WC | N Jurič A Žnuderl | 1 | 3 | S Lamens K McPhee | 2 | 3 | |||||||||||||||||||||
| WC | P Lovrič A Wirges | 3 | 1 | I Bara A Mitu | 6 | 6 | |||||||||||||||||||||
| I Bara A Mitu | 6 | 6 | I Bara A Mitu | 4 | 77 | [10] | |||||||||||||||||||||
J Fourlis  A Ružić | 3 | 7 | [6] | 3 | A Anshba P Kudermetova | 6 | 65 | [5] | |||||||||||||||||||
| 3 | A Anshba P Kudermetova | 6 | 5 | [10] | I Bara A Mitu | 6 | 6 | ||||||||||||||||||||
| WC | J Bogatin P Doberlet | 2 | 6 | [7] |  D Hindová A Kučmová | 4 | 2 | ||||||||||||||||||||
| D Hindová A Kučmová | 6 | 4 | [10] | D Hindová A Kučmová | |||||||||||||||||||||||
| J Fett T Lukas | 6 | 6 | J Fett T Lukas | w/o | |||||||||||||||||||||||
| 2 | B Gumulya P Plipuech | 3 | 3 | ||||||||||||||||||||||||
The 1999 Thalgo Australian Women's Hardcourts doubles was the doubles event of the third edition of the Thalgo Australian Women's Hardcourts; a WTA Tier III tournament held in the Gold Coast. Elena Likhovtseva and Ai Sugiyama were the defending champions but lost in the first round to Anke Huber and Mary Pierce.
The 1999 ASB Classic singles was the singles event of the fourteenth edition of the ASB Classic; a WTA Tier IV tournament and the most prestigious women's tennis tournament held in New Zealand. Dominique Van Roost was the defending champion but lost in the final 6–4, 6–1 against Julie Halard-Decugis.
The 1999 ASB Classic doubles was the doubles event of the fourteenth edition of the ASB Classic; a WTA Tier IV tournament and the most prestigious women's tennis tournament held in New Zealand. Nana Miyagi and Tamarine Tanasugarn were the defending champions but did not compete that year.
The 1999 ANZ Tasmanian International singles was the singles event of the sixth edition of the ANZ Tasmanian International. Patty Schnyder was the defending champion but did not compete that year.
The 1999 Nokia Cup was a WTA Tier IV tournament held in Prostějov, Czech Republic, and the only edition of the Nokia Cup. Slovak Henrieta Nagyová won in the final 7–6(7–2), 6–4 against Silvia Farina.
The 1999 IGA SuperThrift Classic singles was the singles event of the fourteenth edition of the IGA SuperThrift Classic; a WTA Tier III tournament held in Oklahoma City, United States. Venus Williams was the defending champion and won in the final 6–4, 6–0 against Amanda Coetzer.
The 1999 Open Gaz de France singles was the singles event of the seventh edition of the Open GDF Suez; a WTA Tier II tournament held in Paris, France. Mary Pierce was the defending champion but did not compete that year.
Serena Williams defeated Steffi Graf in the final, 6–3, 3–6, 7–5 to win the women's singles tennis title at the 1999 Indian Wells Open. It was the second and last time that the two would contest a professional match.
The 1999 Estoril Open women's singles was the singles event of the first edition of the WTA Tour Estoril Open; a WTA Tier IV tournament and the most prestigious women's tennis tournament held in Portugal. This tournament was part of the ITF Circuit last year, and it was won by Barbara Schwartz. Schwartz was eliminated in the second round of this year's event.
The 1999 Westel 900 Budapest Open singles was the singles event of the second edition of the Budapest Grand Prix; a WTA Tier IV tournament and the most prestigious women's tennis tournament held in Hungary. Virginia Ruano Pascual was the defending champion but lost in the first round to Amanda Hopmans.
The 1999 Betty Barclay Cup singles was the singles event of the fifteenth edition of the Betty Barclay Cup, a WTA Tier II tournament held in Hamburg, Germany and part of the European claycourt season. Martina Hingis was the defending champion but she did not compete that year.
Nathalie Tauziat defeated Barbara Schett in the final, 2–6, 6–4, 6–1 to win the women's singles tennis title at the 1999 Kremlin Cup.
Anastasia Myskina was the defending champion, but chose not to participate that year.
There was no defending champion, due to the cancellation of the semifinals in 1998 due to rain.
The 1999 Tashkent Open singles was the singles event of the first edition of the Tashkent Open; a WTA Tier IVb tournament and the most prestigious women's tennis tournament held in Central Asia.
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 Sanex Trophy singles was the singles event of the first edition of the Sanex Trophy; a WTA Tier IV tournament and one of the most prestigious women's tennis tournament held in Belgium.
The 1999 Eurotel Slovak Open singles was the tennis singles event of the first edition of the most prestigious tournament in Slovakia. In a final of two future World No. 1s, Amélie Mauresmo defeated Kim Clijsters in straight sets, 6–3, 6–3.
The 1999 Wismilak International singles was the singles 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.