Jon Martín

Early life Martín was born on 23 April 2006 in Lasarte-Oria (near San Sebastián), Spain. His father Xanti Martín was also a footballer and a centre-back.

Club career As a youth player, Martín joined the youth academy of La Liga side Real Sociedad and was sent on loan to the youth academy of Beasain in 2022. In 2023, he was promoted to the club's C team before being promoted to their reserve team the same year. On 11 October 2023, he was named by English newspaper The Guardian as one of the best players born in 2006 worldwide. One year later, he was promoted to their senior team. On 19 May 2024, he debuted for them during a 2–0 away win over Real Betis in the league.

Style of play Martín plays as a centre-back and is right-footed. Spanish news website wrote in 2025 that he "has excellent heading ability... often finishes off many set pieces... [has] refined technique for playing the ball".

Career statistics Club

International

Honours Real Sociedad Copa del Rey: 2025–26

Spain U19 UEFA European Under-19 Championship runner-up: 2025

Individual UEFA European Under-19 Championship Team of the Tournament: 2025