Tupou Sopoaga (born 5 June 1992) is a New Zealand professional rugby union footballer who currently plays for the Southland Stags in the Mitre 10 Cup.

He is the younger brother of New Zealand rugby union representative Lima,[2] and cousin of former Cronulla and Cook Islands teammate, Tinirau Arona.

[13] On 25 September, Sopoaga was named in the Cook Islands' train-on squad for their 2017 World Cup qualification match against Tonga on 17 October,[14] but chose not play in the game.

[18] He also achieved the rare feat of debuting for the Highlanders before playing first class rugby in New Zealand as an injury crisis struck their loose forward stocks.

[19] Sopoaga captained the Cook Islands Rugby Union Team in their three tests during the year and also the World Cup Qualifier against Ikale Tahi Tonga.