Semisi Masirewa (セミシ マシレワ, Semishi Mashirewa, born 9 June 1992) is a professional rugby union player who plays as a wing for Japan Rugby League One club Kintetsu Liners.

Born in Fiji, he represents Japan at international level after qualifying on residency grounds.

[1][2] Masirewa was born in Fiji, and moved to New Zealand in 2010 after receiving a scholarship to attend Wanganui High School.

After finishing school Masirewa moved North to the Waikato to join some family members.

Based on his form he was offered a two-year Super Rugby contract by the Western Force starting the next season, in 2016.