Automobiles Cornilleau was a French automobile manufacturer that operated briefly from 1912 to 1914. The company was based in Asnières, Seine, and specialized in producing a limited range of vehicles during its short existence.

Cornilleau's lineup included three distinct models. The first was an 8/1 horsepower vehicle equipped with a 770cc two-stroke engine. Additionally, the company produced two four-stroke models: one with a 10 horsepower engine displacing 1469cc and another with a 12 horsepower engine displacing 2296cc. Notably, all vehicles manufactured by Cornilleau featured shaft-driven systems, which was a characteristic design choice of the time.

Despite its brief operational period, Automobiles Cornilleau contributed to the early automotive landscape in France, although it ultimately ceased production after just two years.