| Date: | 7 March – 28 December |
| Edition: | 6th |
| Main Name: | Davis Cup |
See main article: 1986 Davis Cup.
The World Group was the highest level of Davis Cup competition in 1986.[1]
Australia won the title, defeating the two-time defending champions Sweden in the final, 3–2. The final was held at the Kooyong Stadium in Melbourne, Australia, from 26 to 28 December. It was the Australian team's first Davis Cup title since 1983 and their 26th Davis Cup title overall.
The first-round losers played in the Relegation Play-offs. The winners of the play-offs advanced to the 1987 Davis Cup World Group, and the losers were relegated to their respective Zonal Regions.
Date: 3–5 October
| Home team | Score | Visiting team | Location | Door | Surface | ||
|---|---|---|---|---|---|---|---|
| 5–0 | Indoor | Carpet | |||||
| 5–0 | Outdoor | Clay | |||||
| 4–1 | Outdoor | Grass | |||||
| 3–2 | Outdoor | Clay |