| 1991 Federation Cup World Group | |
|---|---|
| Date | 22-28 July |
| Edition | 1st |
| Champions | |
 Spain | |
The World Group was the highest level of Federation Cup competition in 1991. Thirty-two nations competed in a five-round knockout competition from 22 to 28 July. United States was the two-time defending champion, but Spain won the final to claim its first title.