1979 Davis Cup Americas Zone
The Americas Zone was one of the three regional zones of the 1979 Davis Cup.
13 teams entered the Americas Zone in total, with 6 teams entering the North & Central America Zone and 7 teams entering the South America Zone. The winner of each sub-zone advanced to the Americas Inter-Zonal Final, with the winner going on to compete in the Inter-Zonal Zone against the winners of the Eastern Zone and Europe Zone.
The United States defeated Colombia in the North & Central America Zone final, and Argentina defeated Chile in the South America Zone final. In the Americas Inter-Zonal Final the United States defeated Argentina and progressed to the Inter-Zonal Zone.
North &; Central America Zone
Preliminary rounds
First round
'''Caribbean/West Indies vs. Venezuela'''Qualifying round
Mexico vs. Canada'''Colombia vs. Venezuela'''
Main draw
Semifinals
'''Mexico vs. Colombia'''Final
'''United States vs. Colombia'''South America Zone
Preliminary rounds
First round
Ecuador vs. Peru'''Bolivia vs. Brazil'''
Qualifying round
Ecuador vs. Argentina'''Brazil vs. Uruguay'''