The Ligier JS P4 is an entry-level sports prototype race car, designed, developed, and produced by French manufacturer Onroak Automotive, and named in partnership with former French driver Guy Ligier, and used for the top class of the Ligier European Series.

[2] The car made its debut in the 2018 British LMP3 Cup in its own P4 class.

[3] The car is primarily used in the Ligier European series.

[4] In 2022, the car received an update kit to improve the engine and the brakes.

These upgrades were mandatory for all teams competing in the Ligier European Series.