| Doubles | |
|---|---|
| 1988 Vitosha New Otani Open | |
| Champions |  Conchita Martínez  Barbara Paulus |
| Runners-up |  Sabrina Goleš  Katerina Maleeva |
| Final score | 1–6, 6–1, 6–4 |
Conchita Martínez and Barbara Paulus won in the final 1–6, 6–1, 6–4 against Sabrina Goleš and Katerina Maleeva.
Champion seeds are indicated in bold text while text in italics indicates the round in which those seeds were eliminated.
Sabrina Goleš / Katerina Maleeva (final)
Andrea Betzner / 
Emilse Raponi-Longo (semifinals)
Iva Budařová / 
Sandra Wasserman (semifinals) Ann Devries / 
Julie Salmon (first round)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | S Goleš K Maleeva | 6 | 6 | ||||||||||||||||||||||||
 A Kanellopoulou O Tsarbopoulou | 1 | 1 | 1 | S Goleš K Maleeva | 6 | 6 | |||||||||||||||||||||
 A-K Olsson M Strandlund | 6 | 6 | 4 | D Krajčovičová O Votavová | 1 | 1 | |||||||||||||||||||||
| D Krajčovičová O Votavová | 2 | 7 | 6 | 1 | S Goleš K Maleeva | 4 | 7 | 7 | |||||||||||||||||||
| 3 | I Budařová S Wasserman | 6 | 6 | 3 | I Budařová S Wasserman | 6 | 6 | 6 | |||||||||||||||||||
| L Gould A Simpkin | 3 | 1 | 3 | I Budařová S Wasserman | 3 | 6 | 6 | ||||||||||||||||||||
| J Joseph C Schneider | 4 | 3 | R Milorieva D Rangelova | 6 | 4 | 2 | |||||||||||||||||||||
| R Milorieva D Rangelova | 6 | 6 | 1 | Sabrina Goleš Katerina Maleeva | 6 | 1 | 4 | ||||||||||||||||||||
| C Martínez B Paulus | 6 | 4 | 6 | Conchita Martínez Barbara Paulus | 1 | 6 | 6 | ||||||||||||||||||||
 M Strebel  A Tiezzi | 0 | 6 | 3 | C Martínez B Paulus | 6 | 6 | |||||||||||||||||||||
| M Pawlik H Sprung | 6 | 6 | M Pawlik H Sprung | 0 | 4 | ||||||||||||||||||||||
| 4 | A Devries J Salmon | 4 | 3 | C Martínez B Paulus | 0 | 6 | 6 | ||||||||||||||||||||
 F Martin V Paquet | 7 | 2 | 6 | 2 | A Betzner E Raponi-Longo | 6 | 2 | 2 | |||||||||||||||||||
| H Dahlström J Jonerup | 5 | 6 | 3 | F Martin V Paquet | 3 | 3 | |||||||||||||||||||||
| B Diesner H Fukárková | 2 | 2 | 2 | A Betzner E Raponi-Longo | 6 | 6 | |||||||||||||||||||||
| 2 | A Betzner E Raponi-Longo | 6 | 6 | ||||||||||||||||||||||||
Manuela Maleeva-Fragniere was the defending champion but did not compete that year.
Chris Evert was the defending champion but did not compete that year.
Steffi Graf won in the final 6–4, 6–1 against Katerina Maleeva.
Steffi Graf was the defending champion but lost in the semifinals to Gabriela Sabatini.
Steffi Graf was the defending champion but did not compete that year.
Bettina Bunge and Katerina Maleeva were the defending champions but only Maleeva competed that year with Raffaella Reggi.
Jana Novotná and Catherine Suire were the defending champions but only Suire competed that year with Helen Kelesi.
Isabel Cueto was the defending champion but lost in the quarterfinals to Maria Strandlund.
In the 1989 Volvo Open women's doubles tennis tournament, Sandra Cecchini and Mercedes Paz were the defending champions but only Paz competed that year with Tine Scheuer-Larsen.
Conchita Martínez was the defending champion but did not compete that year.
Steffi Graf was the defending champion and won in the final 6–4, 6–2 against Katerina Maleeva.
Claudia Kohde-Kilsch and Jana Novotná were the defending champions but only Novotná competed that year with Tine Scheuer-Larsen.
Katerina Maleeva was the defending champion but did not compete that year.
Conchita Martínez won in the final 6–1, 6–2 against Barbara Paulus.
Manuela Maleeva was the defending champion but lost in the second round to Catarina Lindqvist.
Steffi Graf was the defending champion but did not compete that year.
Halle Cioffi was the defending champion but lost in the second round to Gretchen Magers.
Jenny Byrne and Michelle Jaggard were the defending champions but they competed with different partners that year, Byrne with Janine Tremelling and Jaggard with Katerina Maleeva.
Top-seeded Manuela Maleeva was the defending champion but fell in the quarterfinals to Kate Gompert. Fourth-seed Andrea Temesvári claimed the title and $38,000 first prize money by defeating Zina Garrison in the final.
Seventh-seeded sisters Katerina Maleeva and Manuela Maleeva claimed the title by defeating third-seeds Penny Barg and Paula Smith in the final.