Kai Clifton Trewin is an Australian professional footballer who plays as a defender for New York City FC in Major League Soccer. Born in Batemans Bay, New South Wales, on 18 May 2001, he developed through the Football ACT pathway and Gungahlin United before joining Brisbane Roar’s academy. Trewin made his senior debut for Brisbane Roar in 2020, established himself across more than 100 senior appearances, moved to Melbourne City in 2024 and helped the club win the 2024–25 A-League Men championsh…
Kai Clifton Trewin was born in Batemans Bay, Australia, on 18 May 2001. He began his development in the Football ACT system with Gungahlin United before moving to Queensland and joining the Brisbane Roar academy. A versatile, right-footed defender, Trewin has been used primarily at centre-back but has also covered defensive midfield, central midfield and right wing-back roles. He made his Brisbane Roar senior debut as an 18-year-old in 2020 and went on to become a regular first-team player, recording more than 100 senior appearances for the club. His performances earned selection for the A-League All Stars in 2024 and a move to Melbourne City ahead of the 2024–25 season. At City, he won the A-League Men championship and made his senior Australia debut against Venezuela on 14 November 2025. New York City FC signed him from Melbourne City on 27 January 2026. The NYCFC and Socceroos profiles identify him as an active defender and Australia international, with his international versatility described as a key part of his value. As at 18 August 2026, he is listed on New York City FC’s senior roster and has been selected in Australia’s squad for the 2026 FIFA World Cup.
Trewin’s first major senior breakthrough came at Brisbane Roar, where he debuted in 2020 as an 18-year-old and progressed into a regular first-team defender. His 2023–24 form led to selection for the 2024 A-League All Stars, while his move to Melbourne City and subsequent senior Australia debut represented the next major stages of his career.
Verified published figures include 103 Brisbane Roar A-League appearances, 37 Melbourne City A-League appearances and 15 New York City FC MLS appearances in the available statistical record. FBref lists 155 senior league appearances and 13,072 minutes across Brisbane Roar, Melbourne City and New York City FC, subject to its coverage note. The Socceroos profile lists five senior Australia appearances and no goals, while other statistical providers list higher totals after subsequent 2026 matches. Trewin was selected for the 2024 A-League All Stars and won the 2024–25 A-League Men championship with Melbourne City.
Senior Australia debut against Venezuela on 14 November 2025. Selection for the 2024 A-League All Stars following his 2023–24 Brisbane Roar season. Winning the 2024–25 A-League Men championship with Melbourne City. Transferring to New York City FC on 27 January 2026 and being selected in Australia’s 2026 FIFA World Cup squad.