The 2015 FIVB Volleyball World League was the 26th edition of the annual men's international volleyball tournament, played from 16 May to 19 July 2015. The tournament featured a record 32 participating countries from 5 confederations. The teams were divided into 3 groups and 8 pools. The Group 1 Final Round which served as the volleyball test event of the 2016 Summer Olympics was held in Rio de Janeiro, Brazil.