The 2019 Kwik Fit British Touring Car Championship was a motor racing championship for production-based touring cars held across England and Scotland. The championship featured a mix of professional motor racing teams and privately funded amateur drivers competing in highly modified versions of family cars which are sold to the general public and conform to the technical regulations for the championship. The 2019 season was the 62nd British Touring Car Championship season and the ninth season for cars conforming to the Next Generation Touring Car (NGTC) technical specification. Colin Turkington successfully defended his title to equal Andy Rouse as the only four time BTCC Champions.

Next Generation Touring Car, also known as NGTC and by its Fédération Internationale de l'Automobile (FIA) designation TCN-1, is an FIA and TOCA specification and classification for production based race cars. The specification covers national level touring car racing. The goal of the limited choices in engines and parts in the NGTC classification is to allow more manufacturers and privateers to race by reducing the cost of a competitive car and to reduce reliance on the increasingly expensive Super 2000 equipment. The only significant differences between different models is the external body shells and the use of front- or rear-wheel drive; the suspension, brakes and transmissions are common to all cars, and engines are of uniform performance.