Cuba (1st title)
| 6–13 August|
1 (in 1 host city)
Teams were split into two round-robin groups of four teams each. The top two teams from each group advanced to the second stage and qualified directly to the 1990 FIBA World Championship for Women. The second stage consisted of another round robin group of four teams, where the top two teams played and extra game to define the champion, and the other two teams played for third place.
The teams that did not advance to the second round played in a knockout bracket to define places fifth through eighth in the final standings.
1989 FIBA Americas Championship for Women Wikipedia
The 1989 FIBA Americas Championship for Women, was the first FIBA Americas Championship for Women regional basketball championship held by FIBA Americas, which also served as Americas qualifier for the 1990 FIBA World Championship for Women, granting berths to the top four teams in the final standings. It was held in Brazil between 6 August and 13 August 1989. Eight national teams entered the event under the auspices of FIBA Americas, the sport's regional governing body. The city of São Paulo hosted the tournament. Cuba won their first title after defeating hosts Brazil in the final.