| Doubles | |
|---|---|
| 2024 Tennis Open Karlsruhe | |
| 2023 Champions |  Neil Oberleitner  Tim Sandkaulen |
Neil Oberleitner and Tim Sandkaulen were the defending champions [1] but chose not to defend their title.
| Doubles | |
|---|---|
| 2024 Tennis Open Karlsruhe | |
| 2023 Champions | Neil Oberleitner Tim Sandkaulen |
Neil Oberleitner and Tim Sandkaulen were the defending champions [1] but chose not to defend their title.
| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | J Schnaitter M Wallner | ||||||||||||||||||||||||||
 J De Loore D Masur |  | ||||||||||||||||||||||||||
 Jiří Barnat R Jebavý | | ||||||||||||||||||||||||||
 J Kovalík I Zelenay | |||||||||||||||||||||||||||
| 4 |  J Nedunchezhiyan VS Prashanth | ||||||||||||||||||||||||||
 I Carou  Mariano Kestelboim | | ||||||||||||||||||||||||||
| WC | Tim Rühl Patrick Zahraj | | |||||||||||||||||||||||||
 G Oliveira S Rodríguez Taverna | |||||||||||||||||||||||||||
 D Cukierman  D Dutra da Silva | |||||||||||||||||||||||||||
| WC | Justin Engel Lasse Pörtner | | |||||||||||||||||||||||||
 D Rincón N Sánchez Izquierdo | | ||||||||||||||||||||||||||
| 3 | I Liutarevich S Martos Gornés | ||||||||||||||||||||||||||
R Molleker  D Yevseyev | |||||||||||||||||||||||||||
 T Kodat  R Strombachs | | ||||||||||||||||||||||||||
| T Colson Niklas Schell | | ||||||||||||||||||||||||||
| 2 |  D Added G Jacq | ||||||||||||||||||||||||||
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 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 doubles was the doubles event of the sixth edition of the ANZ Tasmanian International. Virginia Ruano Pascual and Paola Suárez were the defending champions but only Ruano Pascual competed that year with Florencia Labat. Labat and Ruano Pascual lost in the first round to Nannie de Villiers and Eva Melicharová.
Martina Hingis defeated Amanda Coetzer in the final, 6–2, 6–1 to win the singles tennis title at the 1999 Pan Pacific Open.
The 1999 Toray Pan Pacific Open doubles was the doubles event of the twenty-fourth edition of the Toray Pan Pacific Open Tennis Tournament, the first WTA Tier I tournament of the year. Martina Hingis and Mirjana Lučić were the defending champions but only Hingis competed that year with Jana Novotná.
The 1999 Copa Colsanitas doubles was the doubles 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. Janette Husárová and Paola Suárez were the defending champions but only Suárez competed that year with Laura Montalvo.
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 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.
The 1999 Betty Barclay Cup doubles was the doubles 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. Barbara Schett and Patty Schnyder were the defending champions but only Schett competed that year with Ruxandra Dragomir. The pair lost in the first round to Irina Spîrlea and Caroline Vis.
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.
The 1999 Orange Prokom Open doubles was the doubles event of the second edition of the first women's tennis tournament held in Poland. Květa Hrdličková and Helena Vildová were the defending champions, but Hrdličková did not compete this year. Vildová therefore competed with Eva Melicharová, and was defeated in the first round by third seeds Cătălina Cristea and Ruxandra Dragomir.
The 1999 Bank of the West Classic doubles was the doubles event of the twenty-eighth edition of the first tournament in the US Open Series.
The 1999 TIG Classic doubles was the doubles event of the twentieth edition of the second tournament in the US Open Series.
The 1999 Acura Classic singles was the singles event of the twentieth edition of the third tournament in the US Open Series.
The 1999 Acura Classic doubles was the doubles event of the twentieth edition of the third tournament in the US Open Series. Martina Hingis and Natasha Zvereva were the defending champions but Hingis did not compete this year. Zvereva played with Mary Pierce, and they were defeated in the first time by Cara Black and Irina Selyutina.
The 1999 Toyota Princess Cup singles was the tennis singles event of the third edition of the first hardcourt tournament after the US Open. Monica Seles was the two-time defending champion, but was defeated by Lindsay Davenport in the final to win the title.
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.
The 1999 Generali Ladies Linz doubles was the tennis doubles event of the thirteenth edition of the most prestigious tournament in Austria. Alexandra Fusai and Nathalie Tauziat were the two-time defending champions, but they were defeated in the semifinals by Tina Križan and Larisa Neiland.
Yan Zi and Zheng Jie were the defending champions, but did not participate.