Fierro was a kit car brand established by Joe Fierro in Diamond Bar, California. The brand was known for producing a sports coupe that was distinct from the similarly named Pontiac Fierro, which was introduced later.

The Fierro model was built on the floorpan and running gear of the Volkswagen Beetle, which provided a reliable foundation for the vehicle. The design of the Fierro was aimed at enthusiasts looking for an attractive and sporty vehicle. Some units were equipped with rotary engines, enhancing their performance characteristics.

All Fierro cars were sold in kit form, allowing buyers to assemble their vehicles according to their preferences. This approach appealed to a niche market of automotive hobbyists and contributed to the brand's unique position in the kit car segment.