Semi Valemei (born 20 January 1999) is a Fijian professional rugby league footballer who plays as a winger and centre for the North Queensland Cowboys in the NRL and Fiji at international level.
He previously played for the Canberra Raiders.
In Round 10 of the 2020 NRL season, Valemei was named to make his NRL debut against the Sydney Roosters.
He played in all three of Canberra's finals matches including the preliminary final defeat to Melbourne. He played a total of ten games in his debut season.