Men's Junior South American Volleyball Championship
| Most recent season or competition: 2024 Men's U21 South American Volleyball Championship  | |
| Sport | Volleyball | 
|---|---|
| Founded | 1972 | 
| Continent | South America (CSV) | 
| Most recent champion(s)  | Brazil (21st title) | 
| Most titles | Brazil (21 titles) | 
The Men's Junior South American Volleyball Championship is a sport competition for national volleyball teams with players under 21 years, currently held biannually and organized by the Confederación Sudamericana de Voleibol (CSV), the South American volleyball federation.