Ofisa Treviranus (born 31 March 1984) is a Samoan rugby union player.

[2] Treviranus made his debut for the fifteen men code against Japan in Sigatoka on 18 June 2009.

He was part of the 2011 Rugby World Cup squad for Samoa, and played in three matches.

[2] After the World Cup, Treviranus was signed by English club London Irish.

[3] He previously played for Irish club Connacht Rugby.