The Eastern Zone was one of the three regional zones of the 1970 Davis Cup. 11 teams entered the Eastern Zone, competing across 2 sub-zones. The winner of each sub-zones would play against each other to determine who would compete in the Inter-Zonal Zone against the winners of the Americas Zone and Europe Zone. Australia defeated Japan in the Zone A final, and India defeated Ceylon in the Zone B final. In the Inter-Zonal final India defeated Australia and progressed to the Inter-Zonal Zone.