See main article: 2004 Davis Cup. The World Group play-offs were the main play-offs of 2004 Davis Cup. Winners advanced to the World Group, and loser were relegated in the Zonal Regions I.
Bold indicates team has qualified for the 2005 Davis Cup World Group.
Seeded teams
Unseeded teams
| Home team | Score | Visiting team | Location | Venue | Door | Surface | |
|---|---|---|---|---|---|---|---|
| 4–1 | Royal Kings Park | Outdoor | Grass | ||||
| 5–0 | Club Naval de Campo Las Salinas | Outdoor | Clay | ||||
| 3–2 | Indoor | Carpet | |||||
| 0–5 | Yacht y Golf Club Paraguayo | Outdoor | Clay | ||||
| 3–2 | Indoor | Hard | |||||
| 3–2 | Outdoor | Clay | |||||
| 4–1 | Clubul Sportiv Progresul Bucuresti | Outdoor | Clay | ||||
| 5–0 | Indoor | Clay |