The 2025 Margam Park Urdd National Eisteddfod (Welsh: Eisteddfod Genedlaethol yr Urdd Dur a Môr Margam a'r Fro 2025) was held in Margam Country Park, Neath Port Talbot, Wales, from 26 May to 31 May 2025.
Organisers, the Urdd Gobaith Cymru, announced a record 119,593 competitor registrations in 2025.
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