Samisoni Viriviri NasagavesiMOF (born 25 April 1988) 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.
Viriviri started his career playing in the local 7's competition. He chased a dream borne out of the stories of his grandfather and namesake who was part of the legendary 1977 Fiji XV that beat the British and Irish Lions in Suva. At 19, he broke into the club level for Dratabu in the Nadi Rugby Union club games and later played for Lomaiviti and Suva in 2010 before joining Nadroga. He played for the Police 7's side and he caught the eye of Fiji sevens assistant coach, Etuate Waqa and was selected as the backup winger to Waisea Nayacalevu in the Fiji 7's side.
He was shortlisted as the 2014 IRB Sevens Player of the Year.[8] He finished the season as the Top try-scorer with 52 tries. At the end of the 2014 London Sevens, Viriviri was awarded the 2014 IRB Sevens Player of the Year, the first time a Fijian (playing for Fiji) has ever won that award.[9]