The 2017 Mazda Raceway California 8 Hours was the first Mazda Raceway California 8 Hours race held on Mazda Raceway Laguna Seca on 15 October 2017.

The race was contested with GT3-spec cars, GT4-spec cars and MARC cars.

The race was organized by the Stéphane Ratel Organisation (SRO).

Class winners in bold.