Samiu Kaufusi Vahafolau (born 24 April 1978 in Ovaka, Tonga) is a former rugby union footballer[1] who played for AS Béziers in the French Pro D2 as well as the Tongan national team.

After a stint in Japan with the Sanyo Wild Knights, Vahafolau moved to France in 2007 to join Biarritz Olympique in the Top 14.

He would find a home at Biarritz and play some of the finest rugby of his career, scoring 6 tries in 24 matches for the squad in his first season.

Vahafolau made his debut for Tonga in the run-up to the 2007 Rugby World Cup but was not selected to the final squad.

After two years away from the national team, he was brought back in 2011 and scored a try on his return against Fiji on 2 July.