The 2018 Renault UK Clio Cup is a multi-event, one make motor racing championship held across England. The championship features a mix of professional motor racing teams and privately funded drivers competing in the Clio Renaultsport 200 Turbo EDC that conform to the technical regulations for the championship. Organised by the British Automobile Racing Club, it forms part of the extensive program of support categories built up around the British Touring Car Championship. It will be the 23rd Renault Clio Cup United Kingdom season and the 43rd of UK motorsport undertaken by Renault and Renault Sport. The first race takes place on 1 April at Brands Hatch on the circuit's Indy configuration and concluded on 30 September at the same venue, utilising the Grand Prix circuit, after eighteen races held at nine meetings.

The following teams and drivers are currently signed to run the 2018 season. All teams and drivers were British-registered.

Notes

• One point is awarded to a competitor who leads a Renault UK Clio Cup race. This can only be awarded once to a driver that crosses the start/finish line in the lead.
• Two points are awarded to the Driver(s) setting the fastest lap in each round.
• Drivers shall count their results from the total number of races run less one race.
• Each driver’s single dropped score cannot be taken from the final two rounds of the championship.
• Competitors who are excluded from any race must count that excluded race within their total score.