Sopoaga is a surname. Notable people with the surname include:
- Enele Sopoaga (born 1956), Tuvaluan diplomat and politician
- Fa’afetai Sopoaga, Samoan-New Zealand Pacific public health researcher
- Isaac Sopoaga (born 1981), Samoan-born American football player
- Lima Sopoaga (born 1991), rugby union player
- Saufatu Sopoanga (1952–2020), Tuvaluan politician
- Tupou Sopoaga (born 1992), New Zealand professional rugby union player
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