| Tournament details | |
|---|---|
| Host nation |  Portugal |
| Dates | 7–14 December 1991 |
| Teams | 12 |
| Venue(s) | 1 (in 1 host city) |
| Champions |  Brazil (2nd title) |
The 1991 FIVB Volleyball Boys' U19 World Championship was held in Porto, Portugal for eight days, from 07 to 14 December 1991. This was the second edition of the tournament.