Kai Clifton Trewin (; born 18 May 2001) is an Australian professional soccer player who plays as a central defender for Major League Soccer club New York City FC and the Australia national team.
On 6 March 2020, Trewin made his professional debut for Brisbane Roar in a league match against Western Sydney Wanderers, replacing Scott McDonald in the 92nd minute as the Roar won 3âÂÂ1.
On 17 May 2024, it was announced that Trewin would join fellow A-League Men club Melbourne City on a permanent deal on 1 July, signing a three-year contract.
On 28 January 2026, New York City FC announced that Trewin had been acquired from fellow City Football Group club Melbourne City FC for an undisclosed fee, signing a contract through the 2028âÂÂ29 season, with an option for the 2029âÂÂ30 season.
Trewin has represented Australia at various youth levels.
Melbourne City
Brisbane Roar
Australia U20
Australia U17