The 2024 Men's U21 South American Volleyball Championship was the 26th edition of the Men's Junior South American Volleyball Championship, the biennial international youth volleyball tournament organised by the Confederación Sudamericana de Voleibol (CSV) for the men's under-21 national teams of South America. It was held in Callao, Peru from 30 October to 3 November 2024.
Same as previous editions, the tournament acted as the CSV qualifiers for the FIVB Volleyball Men's U21 World Championship, but in addition, this edition also acted as the CSV qualifiers for the Junior Pan American Games. The top three teams qualified for both the 2025 FIVB Volleyball Men's U21 World Championship in China and the men's volleyball tournament at the 2025 Junior Pan American Games in Asunción, Paraguay as the CSV representatives (besides Paraguay who automatically qualified as host).
Two-time defending champions Brazil successfully retained their title by winning their twenty-first and third consecutive title with a 3–2 victory over Argentina in the final. Chile completed the podium after defeating Colombia 3–0 in the third-place match.
Host and venue.
Peru was confirmed as host country of the tournament during the 76th CSV Annual Congress held on 13 July 2024 in Belo Horizonte, Brazil. It was the third time and second in a row that Peru hosted the tournament after the 1994 and 2022 editions.
On 10 October 2024, Peruvian Volleyball Federation President Gino Vegas confirmed the port city of Callao as the host city, with the Coliseo Miguel Grau, located within the Villa Deportiva del Callao, as venue of the competition.
Teams.
Seven of the twelve CSV member associations entered the tournament. Bolivia was initially expected to participate but in the end did not enter the tournament.
Squads.
Each national team had to register a squad of a minimum of 12 and a maximum of 14 players players. Players born on or after 1 January 2005 were eligible to compete in the tournament.
Competition format.
The competition format depends on the number of participating teams. With 7 teams two groups were formed, one of three teams and the other of four, which were played on a single round-robin basis in the preliminary round. The group standing procedure was as follows:
Once the preliminary round is completed, the top two teams in each group advance to the semi-finals, while the third place teams in each group and the fourth place team in the group of four advance to the playoffs to determine the fifth through seventh place positions. The winners of the semi-finals advance to the final to define the champions while the losers of the semi-finals decide third and fourth place.
Preliminary round.
All match times are local times, PET (), as listed by CSV.
Final round.
5th–7th playoff.
In the fifth to seventh place playoff, the third place team from Group A faced the fourth and third place teams from Group B, with the result between the latter two in the preliminary round being carried over to this round to be taken into account in the playoff standings.
Final standing.
 ;templatestyles src="Col-begin/styles.css"/ ;
Individual awards.
The following individual awards were presented at the end of the tournament.
 ;templatestyles src="Col-begin/styles.css"/ ;
References.
 ;templatestyles src="Reflist/styles.css" / ;