Benjamin Vainga Charles Tameifuna (Tongan: [dɑːmeɪfʊnɑː]; born 30 August 1991) is a professional rugby union player who plays as a prop for Top 14 club Bordeaux Bègles.

Born in New Zealand, he represents Tonga at international level after qualifying on ancestry grounds.

[2] He represented the New Zealand under 20s at the 2011 IRB Junior World Championship,[3] and in March 2012 he made his Chiefs debut after an injury sidelined Ben Afeaki.

[9] Tameifuna's uncle Sona Taumalolo was another Chiefs prop, who also played for Tonga at the 2011 Rugby World Cup.

[10] In July 2012, with hooker Mahonri Schwalger from Samoa, the two props combined for 60 minutes to help the Chiefs beat the Crusaders 20–17, at Waikato Stadium in Hamilton.