1984 Davis Cup World Group

The World Group was the highest level of Davis Cup competition in 1984.

Australia were the defending champions, but were eliminated in the semifinals.

Sweden won the title, defeating the United States in the final, 4–1. The final was held at the Scandinavium in Gothenburg, Sweden, from 16 to 18 December. It was the Swedish team's first Davis Cup title since 1975 and their 2nd Davis Cup title overall.

Relegation play-offs
The first-round losers played in the Relegation Play-offs. The winners of the play-offs advanced to the 1985 Davis Cup World Group, and the losers were relegated to their respective Zonal Regions.

Results summary
Date: 28–30 September


 * ,, and  remain in the World Group in 1985.
 * ,, and  are relegated to Zonal competition in 1985.