The 1946 Davis Cup was the 35th edition of the most important tournament between national teams in men's tennis.

The trophy and tournament were renamed for the founder, Dwight F. Davis, upon his death in 1945.

This was the first edition since the end of World War II.

The United States defeated Mexico in the America Zone final, and Sweden defeated Yugoslavia in the Europe Zone final.

The final was played at Kooyong Stadium in Melbourne, Australia on 26–30 December.