2018 British LMP3 Cup

The 2018 LMP3 Cup Championship was the second season for the British LMP3 Cup. The calendar was announced on 10 November 2017, with the same venues as the previous year, but in a different order. The series finale was held at Silverstone, one month later than in 2017.

Michelin supplied the tyres, a change from Pirelli in 2017, and French manufacturer Norma campaigned an M30 chassis, the first non-Ligier JS P3 in the series.