The 1970 South American Basketball Championship for women , the thirteenth South American Basketball Championship for women , took place between September 22 and October 3, 1970 in Guayaquil , Ecuador , which hosted the championship for the second time. The winner was the Brazilian team , which won the South American Women's Championship for the sixth time, for the fourth time in a row. For the first time a team from Venezuela and a record eight teams took part in the tournament.
The game was played in the form of a round-robin tournament with eight teams. Each team played against each other exactly once, so that each team played seven games (a total of 28 games were played). There were two points for each win and one point for a defeat. The team with the highest points was the women's basketball South American champion in 1970. In the event of a tie, the basket ratio decided.