Back Grup B del Campionat del Món de bàsquet masculí del 2010 Catalan 2010. gada Pasaules čempionāts basketbolā — B grupa Latvian/Lettish Сагсан бөмбөгийн ДАШТ-2010 B хэсэг Mongolian Mistrzostwa Świata w Koszykówce Mężczyzn 2010/Grupa B Polish Светско првенство у кошарци 2010 — Група Б Serbian 2010 FIBA Dünya Basketbol Şampiyonası B Grubu Turkish
Group B of the 2010 FIBA World Championship commenced on August 28 and ended on September 2. The group played all of its games at Abdi İpekçi Arena in Istanbul, Turkey.
The group was composed of Brazil, Croatia, Iran, Slovenia, Tunisia and the United States. Their average FIBA World Ranking at the start of the tournament was 19; excluding Tunisia, the lowest in the rankings, it was 14.4. Tunisia, which finished third at the FIBA Africa Championship 2009, and the Asian champion Iran, both made their tournament debuts, while Croatia returned for the first time since 1994. The four teams with the best records in group play – USA, Slovenia, Brazil, and Croatia – advanced to the knockout stage.