Samisoni Viriviri Nasagavesi is a Fiji rugby union player. He played for the Fiji sevens team, and in 2014 won the World Rugby Sevens Player of the Year award after leading the 2013-14 World Rugby Sevens Series in tries scored.

The men's rugby sevens tournament at the 2016 Summer Olympics was held in Brazil. It was hosted at the Deodoro Stadium, a temporary outdoor stadium constructed as part of the Deodoro Modern Pentathlon Park in Rio de Janeiro. The tournament was held from 9 August to 11 August 2016, starting with group matches before finishing with the medal ceremony on 11 August. The 2016 Games marked the first time that rugby sevens has been played at the Olympics, and the first time since 1924 that any form of rugby had been played at the Olympics.