The 2018 Le Mans Cup, known as the 2018 Michelin Le Mans Cup under sponsorship, was the third season of the Le Mans Cup. It began on 12 May at the Autodromo Nazionale Monza and finished on 27 October at the Algarve International Circuit. The series was open to Le Mans Prototypes in the LMP3 class, and grand tourer sports cars in the GT3 class.