The 1970 Davis Cup was the 59th edition of the Davis Cup, the most important tournament between national teams in men's tennis.

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.

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.