The FC de Onda al Grao de Castellon y Villareal-Puerto de Burriana was a Spanish gauge narrow gauge railway that operated over 43 kilometres of track between 1888 and 1963, when the system closed. Opening dates of the various sections are as follows:

Main line 29 km Grao de Castellon – Casellon de la Plana 1888–1963. Casellon de la plana – Vilarreal 1889–1963. Villarreal – Onda 1890–1963. Branch line 14 km. Vilarreal – Burriana 1907–1956, reopened 1960–1963. Burriana – Grao de Burriana 1907–1936. Burriana – Porto de Burriana 1948–1956.

At closure the railway had 12 steam locomotives of 0-6-0T and 0-6-2T types, 35 passenger cars and 172 freight cars.Morley, J. & P.G. Spencer, Locomotives & Railcars of the Spanish Narrow Gauge Public Railways, London, 1995, Industrial Railway Society

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