| Doubles | |
|---|---|
| 1989 Estoril Open | |
| Champions | |
| Runners-up | |
| Score | 6–2, 6–4 |
Iva Budařová and Regina Rajchrtová won in the final 6–2, 6–4 against Gaby Castro and Conchita Martínez.
| Doubles | |
|---|---|
| 1989 Estoril Open | |
| Champions | |
| Runners-up | |
| Score | 6–2, 6–4 |
Iva Budařová and Regina Rajchrtová won in the final 6–2, 6–4 against Gaby Castro and Conchita Martínez.
Champion seeds are indicated in bold text while text in italics indicates the round in which those seeds were eliminated.
Sabrina Goleš / 
Tine Scheuer-Larsen (quarterfinals)
Sandra Cecchini / 
Patricia Tarabini (semifinals)
Iva Budařová / Regina Rajchrtová (champions)
Kate McDonald / Adriana Villagrán (quarterfinals)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | 6 | 6 | |||||||||||||||||||||||||
| 0 | 1 | 1 | 6 | 6 | 5 | ||||||||||||||||||||||
| 6 | 7 | 7 | 0 | 7 | |||||||||||||||||||||||
| 2 | 5 | 6 | 2 | 3 | |||||||||||||||||||||||
| 3 | 6 | 6 | 3 | 4 | 6 | 6 | |||||||||||||||||||||
| 3 | 4 | 3 | 3 | 6 | |||||||||||||||||||||||
| 6 | 6 | 6 | 1 | r | |||||||||||||||||||||||
| 4 | 3 | 3 | 6 | 6 | |||||||||||||||||||||||
| 2 | 3 | 2 | 4 | ||||||||||||||||||||||||
| 6 | 6 | 6 | 6 | ||||||||||||||||||||||||
| 0 | 1 | 4 | 2 | 3 | |||||||||||||||||||||||
| 4 | 6 | 6 | 6 | 4 | 6 | ||||||||||||||||||||||
| 5 | 1 | 2 | 0 | 6 | 4 | ||||||||||||||||||||||
| 7 | 6 | 4 | 7 | 5 | |||||||||||||||||||||||
| 2 | 2 | 2 | 6 | 5 | 7 | ||||||||||||||||||||||
| 2 | 6 | 6 | |||||||||||||||||||||||||
Kathy Jordan and Paula Smith were the defending champions but lost in the final 6–4, 4–6, 6–2 against Barbara Potter and Sharon Walsh.
Anne Hobbs won in the final 6–4, 6–7, 6–4 against Ginny Purdy.
Kathleen Horvath won in the final 6–4, 6–3 against Marcela Skuherská.
Rosalyn Fairbank and Candy Reynolds won in the final 6–4, 7–6 against Alycia Moulton and Paula Smith.
Chris Evert-Lloyd was the defending champion but did not compete that year.
Kathleen Horvath and Yvonne Vermaak were the defending champions but lost in the semifinals to Ivanna Madruga-Osses and Catherine Tanvier.
Neige Dias won in the final 6–3, 6–3 against Bettina Fulco.
Iva Budařová and Sandra Wasserman won in the final 1–6, 6–3, 6–2 against Anna-Karin Olsson and María José Llorca.
Iva Budařová and Sandra Wasserman were the defending champions but did not compete that year.
Isabel Cueto won in the final 7–6, 6–2 against Sandra Cecchini.
Isabel Cueto was the defending champion but lost in the quarterfinals to Maria Strandlund.
Conchita Martínez and Barbara Paulus were the defending champions but did not compete that year.
Andrea Betzner and Judith Wiesner were the defending champions but only Wiesner competed that year with Sabrina Goleš.
Conchita Martínez won in the final 6–1, 6–2 against Barbara Paulus.
Conchita Martínez and Barbara Paulus won in the final 1–6, 6–1, 6–4 against Sabrina Goleš and Katerina Maleeva.
Fourth-seeded Andrea Temesvári was the defending champion but went out in the semifinals to Manuela Maleeva. Top-seed Maleeva won the final and $34,000 first prize money by defeating Lisa Bonder-Kreiss in the final.
Fourth-seeded Virginia Ruzici was the defending champion but went out in the semifinals to Andrea Temesvári. Top-seed Temesvári won the final and $34,000 first prize money by defeating Zina Garrison in the final.
Top-seeded pair Kathy Horvath and Virginia Ruzici claimed the title by defeating Gigi Fernández and Beth Herr in the final.
Top-seeded JoAnne Russell and Virginia Ruzici were the defending champions but they lost in the final to Ivanna Madruga-Osses and Catherine Tanvier.
Iva Budařová and Regina Rajchrtová were the defending champions, but Rajchrtová opted to rest in order to compete at the Fed Cup the next week. Budařová teamed up with Catherine Tanvier and lost in the semifinals to Carin Bakkum and Nicole Jagerman.
