| Continent: | SEABA U-18 |
| Year: | 2004 |
| Host: | Philippines |
| Dates: | April 14–17 |
| Teams: | 4 |
| Federations: | 10 |
| Venues: | 1 |
| Cities: | 1 |
| Champions: | Philippines |
| Title Number: | 3 |
| Mvp: | Rogemar Menor |
| Prevseason: | 2002 |
| Nextseason: | 2006 |
The 2004 SEABA Under-18 Championship was the qualifying tournament for Southeast Asia Basketball Association at the 2004 FIBA Asia Under-18 Championship. The tournament was held in Lucena, Quezon, the Philippines from April 14 to April 17. Quezon Convention Center was the venue of all the games.[1] The hosts won their third overall title by sweeping all of their assignments to earn right to represent SEABA together with the second-placer Singapore.
Indonesia was supposed to participate at the tournament but withdrew a few days before the first match was due to be played[2]
| width=10px bgcolor="#ccffcc" | Qualified for the final |
|}
| width=10px bgcolor="#ccffcc" | Qualified for the 2004 FIBA Asia Under-18 Championship |
| width=40 | Rank | width=180 | Team |
|---|---|---|---|
| 4 |