1988 Davis Cup World Group

The World Group was the highest level of Davis Cup competition in 1988.

West Germany won the title, defeating the defending champions Sweden in the final, 4–1. The final was held at the Scandinavium in Gothenburg, Sweden, from 16 to 18 December. It was the West German team's first Davis Cup title (having previously come runner-up in 1970 and 1985), becoming the ninth nation to win the Davis Cup.

Relegation play-offs
The first-round losers played in the Relegation Play-offs. The winners of the play-offs advanced to the 1989 Davis Cup World Group, and the losers were relegated to their respective Zonal Group I.

Results summary
Date: 8–10 April


 * ,, and  remain in the World Group in 1989.
 * ,, and  are relegated to Zonal competition in 1989.