The 1970 Davis Cup was the 59th edition of the Davis Cup, the most important tournament between national teams in men's tennis. 31 teams entered the Europe Zone, 11 teams entered the Americas Zone, and 11 teams entered the Eastern Zone. Hong Kong made its first appearance in the tournament. Brazil defeated Canada in the Americas Inter-Zonal final, India defeated Australia in the Eastern Inter-Zonal final, and Spain and West Germany were the winners of the two Europe Zones, defeating Yugoslavia and the Soviet Union respectively. In the Inter-Zonal Zone, West Germany defeated India and Spain defeated Brazil in the semifinals, and then West Germany defeated Spain in the final. West Germany were then defeated by the defending champions United States in the Challenge Round. The final was played at the Harold Clark Courts in Cleveland, Ohio, United States on 29–31 August.

Americas Zone

North & Central America Zone

South America Zone

Americas Inter-Zonal Final

Brazil vs. Canada

Eastern Zone

Zone A

Zone B

Eastern Inter-Zonal Final

India vs. Australia

Europe Zone

Zone A

Zone A Final

Spain vs. Yugoslavia

Zone B

Zone B Final

West Germany vs. Soviet Union

Inter-Zonal Zone

Draw

Semifinals

India vs. West Germany Brazil vs. Spain

Final

West Germany vs. Spain

Challenge Round

United States vs. West Germany