Martim Chelmik Santos Antunes (born 13 June 2008) is a Portuguese professional footballer who plays as a defender for Porto B.
Club career As a youth player, Chelmik joined the youth academy of Porto. Ahead of the 2025–26 season, he was promoted to the club's under-19 team, where he played in the UEFA Youth League.
International career Chelmik is a Portugal youth international. During May and June 2025, he helped the Portugal national under-17 football team win the 2025 UEFA European Under-17 Championship.
Style of play Chelmik plays as a defender. Portuguese news website Cracques.pt wrote in 2025 that he "is one of the most promising players in Portuguese football, a central defender who combines tactical maturity with an imposing physique".
Honours Portugal U17 FIFA U-17 World Cup: 2025 UEFA European Under-17 Championship: 2025
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