The Americas Zone was one of the three regional zones of the 1970 Davis Cup.
11 teams entered the Americas Zone: 4 teams competed in the North & Central America Zone, while 7 teams competed in the South America Zone. The winner of each sub-zone would play against each other to determine who moved to the Inter-Zonal Zone to compete against the winners of the Eastern Zone and Europe Zone.
Canada defeated New Zealand in the North & Central America Zone final, and Brazil defeated Colombia in the South America Zone final. In the Americas Inter-Zonal Final, Brazil defeated Canada and progressed to the Inter-Zonal Zone.