The WTA Brasil Open was founded in 1977 as the successor event to the earlier Brazilian International Championships (1932–1969).

Although the WTA itself currently does not acknowledge many of these tournaments to be new editions of one larger tournament, a part of historians, the press, and the media, see them as only one tournament despite changes in names, cities, surfaces, and various hiatus.

Finals

Singles

LocationYearChampionRunner-upScoreRef
World Tour event
São Paulo1977United States Billie Jean KingNetherlands Betty Stöve6–1, 6–4
1978–83Not held
Rio de Janeiro1984Italy Sandra CecchiniArgentina Adriana Villagrán-Reami6–3, 6–3
São Paulo1985Argentina Mercedes PazPeru Laura Arraya5–7, 6–1, 6–4
1986United States Vicki Nelson-DunbarUnited States Jenny Klitch6–2, 7–6(7–1)
Guarujá1987Brazil Niege DiasBrazil Patricia Medrado6–0, 6–7, 6–4
1988Argentina Mercedes Paz (2)Canada Rene Simpson7–5, 6–2
1989Argentina Federica HaumüllerArgentina Patricia Tarabini7–6(9–7), 6–4
São Paulo1990Germany Veronika MartinekUnited States Donna Faber6–2, 6–4
1991Germany Sabine HackGermany Veronika Martinek6–3, 7–5
1992Not held
Curitiba1993Germany Sabine Hack (2)Argentina Florencia Labat6–2, 6–0
1994–98Not held
São Paulo1999Colombia Fabiola ZuluagaAustria Patricia Wartusch7–5, 4–6, 7–5
Tier IV event
São Paulo2000Hungary Rita Kuti-KisArgentina Paola Suárez4–6, 6–4, 7–5
Tier II event
Mata de São João2001United States Monica SelesSocialist Federal Republic of Yugoslavia Jelena Dokić6–3, 6–3
2002Russia Anastasia MyskinaGreece Eleni Daniilidou6–3, 0–6, 6–2

Doubles

LocationYearChampionsRunners-upScoreRef
World Tour event
São Paulo1977Australia Kerry Reid Australia Wendy TurnbullSouth Africa Linky Boshoff South Africa Ilana Kloss6–3, 5–7, 6–2
1978–83Not held
Rio de Janeiro1984Canada Jill Hetherington Canada Hélène PelletierUnited States Penny Barg-Mager United States Kyle Copeland6–3, 2–6, 7–6
São Paulo1985Argentina Mercedes Paz Argentina Gabriela SabatiniBrazil Niege Dias Hungary Csilla Bartos7–5, 6–4
1986Brazil Neige Dias Brazil Patricia MedradoPeru Laura Arraya Austria Petra Huber6–4, 4–6, 7–6(8–6)
Guarujá1987United States Katrina Adams United States Cheryl JonesCanada Jill Hetherington Argentina Mercedes Paz6–3, 6–4
1988Argentina Bettina Fulco Argentina Mercedes Paz (2)Netherlands Carin Bakkum Netherlands Simone Schilder7–5, 6–2
1989Argentina Mercedes Paz (3) Argentina Patricia TarabiniBrazil Cláudia Chabalgoity Brazil Luciana Corsato6–2, 6–2
São Paulo1990Argentina Bettina Fulco Czechoslovakia Eva ŠvíglerováFrance Mary Pierce United States Luanne Spadea7–5, 6–4
1991Argentina Inés Gorrochategui Argentina Mercedes Paz (4)United States Renata Baranski United States Laura Glitz6–2, 6–2
1992Not held
Curitiba1993Germany Sabine Hack Germany Veronika MartinekBrazil Cláudia Chabalgoity Brazil Andrea Vieira6–2, 7–6(7–4)
1994–98Not held
São Paulo1999Argentina Laura Montalvo Argentina Paola SuárezSlovakia Janette Husárová Argentina Florencia Labat6–7(7–9), 7–5, 7–5
Tier IV event
São Paulo2000Argentina Laura Montalvo (2) Argentina Paola Suárez (2)Slovakia Janette Husárová Argentina Florencia Labat5–7, 6–4, 6–3
Tier II event
Mata de São João2001South Africa Amanda Coetzer United States Lori McNeilUnited States Nicole Arendt Argentina Patricia Tarabini6–7(8–10), 6–2, 6–4
2002Spain Virginia Ruano Pascual Argentina Paola Suárez (3)France Émilie Loit Paraguay Rossana de los Ríos6–4, 6–1