| Competition: | Boys' U19 World Championship |
| Continent: | World |
| Year: | 1989 |
| Dates: | 7–14 December 1991 |
| Teams: | 12 |
| Venues: | 1 |
| Cities: | 1 |
| Champions: | BRA |
| Title Number: | 2 |
| Last: | 1989 FIVB Volleyball Boys' U19 World Championship |
| Next: | 1993 FIVB Volleyball Boys' U19 World Championship |
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.
__TOC__
The 12 teams were divided into two pools of six teams each and played a round-robin tournament. The top two teams of each pool progressed to the semifinals.
| width=50% | Pool A | width=50% | Pool B |
|---|---|---|---|
| (Hosts) | |||
|}
|}
|}
| width=40 | Rank | width=180 | Team |
|---|---|---|---|
| 4 | |||
| 5 | |||
| 6 | |||
| 7 | |||
| 8 | |||
| 9 | |||
| 10 | |||
| 11 | |||
| 12 |