The 2018 F4 Spanish Championship was the third season of the Spanish F4 Championship. It was a multi-event motor racing championship for open wheel, formula racing cars regulated according to FIA Formula 4 regulations, taking place in Spain. The championship featured drivers competing in 1.4 litre Tatuus-Abarth single seat race cars that conformed to the technical regulations for the championship. The series was organised by RFEDA.