| Date: | 3 February – 17 December |
| Edition: | 9th |
| Main Name: | Davis Cup |
See main article: 1989 Davis Cup.
The World Group was the highest level of Davis Cup competition in 1989.[1] The first-round losers went into the Davis Cup World Group qualifying round, and the winners progressed to the quarterfinals and were guaranteed a World Group spot for 1990.
West Germany won the title for a second consecutive year, defeating Sweden in the final, 3–2. The final was held at the Schleyer-Halle in Stuttgart, West Germany, on 15–17 December. It was the West Germany team's 2nd Davis Cup title overall.