Darlan Ferreira Souza led the Brazilian team with 12 points and Iran’s Saber Kazemi and Mobin Nasri each scored eight points.
Team Melli will meet Cuba on Monday.
Iran had lost to Germany 3-1, Ukraine 3-0, Czech Republic 3-1, Italy 3-0 and defeated Qatar 3-1.
The 2023 FIVB Volleyball Men's Olympic Qualification Tournaments, alternatively the 2023 FIVB Volleyball Men's World Cup (for the tournament held in Japan) and also known as FIVB Road to Paris Volleyball Qualifier, are the three volleyball tournaments to be contested by 24 men's national teams of the Fédération Internationale de Volleyball (FIVB), where the top teams will earn a place in the 2024 Summer Olympics.
AMK/TT