| Competition: | Boys' U19 World Championship |
| Continent: | World |
| Gender: | Men |
| Year: | 2003 |
| Size: | 180px |
| Dates: | 5–13 July |
| Teams: | 16 |
| Venues: | 2 |
| Cities: | 1 |
| Champions: | BRA |
| Title Number: | 6 |
| Last: | 2001 FIVB Volleyball Boys' U19 World Championship |
| Next: | 2005 FIVB Volleyball Boys' U19 World Championship |
The 2003 FIVB Volleyball Boys' U19 World Championship was held in Suphanburi, Thailand from 5 to 13 July 2003.
The following national teams have qualified:
| width=25% | Pool A | width=25% | Pool B | width=25% | Pool C | width=25% | Pool D |
|---|---|---|---|---|---|---|---|
| width=40 | Rank | width=180 | Team |
|---|---|---|---|
| 4 | |||
| 5 | |||
| 6 | |||
| 7 | |||
| 8 | |||
| 9 | |||
| 13 | |||
| Douglas, Luiz Zech, Thiago Machado, Thiago, Victor, Fábio, Breno, Danilo, Igor Braz, Moyses, Silmar, Everaldo Head Coach: Percy Oncken |
Roman Danilov
Danilo Aleksey Ostapenko
Ramaswami Kamraj