John Martin, born on 5 January 1999 (age 27), is a Republic of Ireland striker with Shelbourne. He is not a Celtic name, and there is no need to pretend otherwise, but he remains a useful reference point in the League of Ireland: a centre-forward still getting regular first-team work in 2026.
His most productive league season came with Waterford in 2021, when he scored 10 goals in 31 appearances. That remains the clearest marker in his career so far: a solid return, earned over a proper run of games rather than a brief burst.
At Shelbourne, Martin has continued to carry a role in the side. In 2026 he has made 16 league appearances and scored six league goals, matching that return across 16 Premier Division outings. He has also featured six times in the Conference League, taking his Shelbourne total for the year to 22 appearances and six goals in all competitions.
His current market value is around £191,000, according to Transfermarkt. Martin’s career is that of an established domestic professional: productive at Waterford, involved at Shelbourne, and still part of the first-team picture.
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