Sione Lousi (born 8 October 1989) is a New Zealand former professional rugby league footballer who last played for the Townsville Blackhawks in the Queensland Cup.

From here he played for the Bay Roskill Vikings and Richmond Bulldogs in the Auckland Rugby League competition and joined the New Zealand Warriors Allied Workforce development squad.

[2] Lousi made his first grade debut in round 1 of the 2010 NRL season against the Gold Coast.

[4] He was released by the Warriors at the end of the 2016 season and joined the Townsville Blackhawks in the Queensland Cup.

Lousi played with Townsville until the end of the 2021 season making a total of 70 appearances in the Queensland Cup.