The 2018 ADAC Formula 4 Championship was the fourth season of the ADAC Formula 4, an open-wheel motor racing series. It was a multi-event motor racing championship that featured drivers competing in 1.4 litre Tatuus-Abarth single seat race cars that conformed to the technical regulations for the championship. It began on 14 April at Oschersleben and finished on 23 September at Hockenheim after seven triple header rounds.