Siosifa is a Tongan masculine given name. It may refer to:
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Siosifa Lisala
Siosifa Lisala (born 2 February 1994 in Tonga) is a Tongan-born Japanese rugby union player for the New South Wales Waratahs, NSW Waratahs in Super Rugby. His playing position is Wing (rugby union), wing. He has signed to the Waratahs squad for ...
(born 1994), Tongan-born Japanese rugby union player
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Siosifa Talakai (born 1997), Australian rugby league player
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Siosifa Tuʻitupou Tuʻutafaiva, Tongan lawyer and politician
{{Given name
Masculine given names