Famous French Inventors

Rudolf Diesel was a German mechanical engineer and inventor best remembered for inventing the Diesel engine. After Diesel's demise, his engine became an important substitution for the steam piston engine. The engine became widespread in applications, such as agricultural machines, submarines, ships, and trucks. His life inspired the 1942 biographical film Diesel, in which he was played by Willy Birgel.

Nicéphore Niépce revolutionized science by inventing heliography and made the first permanent photographic image. He had initially been part of Napoleon’s army but had to quit due to his failing health. The Niépce Prize is awarded to a photographer every year in France, in his honor.

Louis Le Prince was a French inventor and artist. He is credited with inventing an early motion-picture camera and is often referred to as the Father of Cinematography. However, Louis Le Prince's work failed to influence the commercial development of motion picture because of the secrecy surrounding his invention.

Louis Blériot was a French aviator, engineer, and inventor. He is credited with developing the first workable headlamp for cars. He is also credited with making the first working, piloted monoplane. Blériot achieved worldwide fame in 1909 when he became the first person to fly across the English Channel. Louis Blériot also founded the successful aircraft manufacturing company, Blériot Aéronautique.

Nicolas-Joseph Cugnot was a French inventor best remembered for building the Fardier à vapeur, the world's first automobile. Fardier à vapeur was the first working self-propelled mechanical land-vehicle. Built in 1769, the vehicle accidentally knocked down a stone or brick wall in 1771, an incident which is widely regarded as the first known automobile accident in the world.

Marcel Dassault was a French industrialist and engineer. He played an important role during the First World War when he developed a type of aircraft propeller which was used by the French army. In 1916, he worked with Louis Coroller and Henry Potez to form a company named Société d'Études Aéronautiques in order to manufacture the SEA series of fighters.

Best known for developing the Charles’s law, which explains the expansion of gases when heated, Jacques Charles was a prominent French physicist. He was the first to ascend in a hydrogen-filled gas balloon, thus pioneering hot-air balloon flight. The Académie des Sciences member later became a professor of physics.

Étienne Lenoir was a Belgian-French engineer. He is credited with developing the internal combustion engine which was commercialized in sufficient quantities. Lenoir is also credited with inventing such electrical devices as an improved electric telegraph which played a key role during the Franco-Prussian War. 

Jacques de Vaucanson was a French artist and inventor. He is credited with creating impressive and innovative automata. De Vaucanson was also the first inventor to design an automatic loom. His ideas for the automation of the weaving process were later perfected by Joseph Marie Jacquard, who created the Jacquard machine.    

Charles Bedaux was a French-American millionaire and production engineer. He is credited with developing the Bedaux System, which decides the amount of money to be paid for a given amount of time. A reliable management consultant, Charles Bedaux worked closely with Nazis and British royalty alike.

French engineer and inventor Georges Claude was often referred as the Edison of France. He is most noted for inventing and commercializing neon lighting and having a near monopoly on the new technology, for conducting an experiment to generate thermal energy of the ocean and building the first Ocean Thermal Energy Conversion (OTEC) plant, and for the Claude cycle.  

Georges Leclanché was a 19th-century French electrical engineer who invented what became known as the Leclanché cell. His invention is considered the forerunner of the modern dry cell battery. He was educated at École Centrale des Arts et Manufactures and had a successful engineering career. He later founded the cells factory "Leclanché-Barbier" with Ernest Barbier. 

Auguste Lumière was a French engineer, illusionist, industrialist, and biologist. Alongside his brother Louis Jean Lumière, Auguste is credited with inventing a projection device and animated photographic camera called the cinematograph, which attracted worldwide acclaim. He is also remembered for his innovations in military aircraft and his pioneering work in the use of X-rays.

Best known for inventing the electric-arc furnace, Paul Heroult had also devised the electrolytic process for developing low-cost aluminium. Because of a similar work by Charles Martin Hall, the process came to be known as the Hall–Heroult process. He had also been a technical advisor to many companies.