Avions Voisin was a French luxury automobile brand established by Gabriel Voisin in 1919 which traded until 1939.^[1]

Gabriel B. Voisin was an aviation pioneer and manufacturer who in 1919 started producing cars using Knight-type sleeve valve engines at Issy-les-Moulineaux, an industrial suburb to the southwest of Paris. Former student of the Fine Arts School of Lyon and enthusiast for all things mechanical since his childhood, Voisin's uncompromisingly individual designs made extensive use of light alloys, especially aluminum. One of the company's most striking early designs was the Voisin Laboratoire Grand Prix car of 1923; one of the first cars ever to use monocoque chassis construction,^[2] and utilising small radiator-mounted propeller to drive the cooling pump. The characteristic Voisin style of 'rational' coachwork he developed in conjunction with his collaborator André Noel. Noel prioritized lightness, central weight distribution, capacious luggage boxes and distinctively angular lines. The 1930s models with underslung chassis were strikingly low.

In the early 1930s, Gabriel Voisin could not pay all of his draughtsmen anymore and a young creative engineer named André Lefèbvre quit, recommended by Gabriel to Louis Renault. Lefèbvre finally entered Citroën where he led three particularly significant car projects: the Traction Avant, the 2CV and the DS, using a lot of Gabriel's lessons.

Sleeve valve (Knight) engines were used exclusively until some later models switched to Graham 3.5 litre engines. The Knight engines included: inline four; inline six; V8 (prototype); V12 - 7.2 liter, 1921 (prototype); inline twelve and a seven-cylinder radial (prototype).

After the war the business was nationalised in the political turmoil and the Government installed directors who did not continue the original engineering traditions. The Voisin business was integrated into that of its principal creditor, engine supplier Gnome & Rhône which was in turn nationalised in 1945 to form the basis for what now became the state-directed SNECMA business.

Voisin presented a "Biscooter Voisin" at the 1950 Paris Motorcycle and Bicycle Show, a voiturette intended for the impoverished age, with a front-mounted 125 cc engine from Gnome & Rhône. The aluminium-bodied vehicle had a three-speed transmission with a secondary gear and did not require a driver's license.^[3] The company failed to proceed with the Biscooter and instead mandated a Mr. Moglia, previously employed by Hotchkiss to develop an alternative voiturette. Moglia's design appeared at the 1952 Paris Motor Show fitted with the same Gnome & Rhône engine, but on Moglia's design the engine was moved to the rear of the little vehicle. The braking and suspension systems were also quite different. The Moglia design was presented as the new "Biscooter Voisin", a nomenclature which at least one commentator found "abusive".^[4]

The vehicle, renamed Biscúter, was adapted for Spanish conditions and about 12,000 were produced in Catalonia by Spanish firm Autonacional S.A. under license from Voisin between 1953 and 1960.

• A 1925 Avions Voisin C3 Cabriolet which won best in class at the Pebble Beach Concours d'Elegance for 2001 and Best in Show at the Motor Cars of Radnor Hunt in Pennsylvania in 2002, sold at auction for EUR€212,800 in 2015^[5]
• A 1934 C-15 Ets. Saliot Roadster won best of show at the Pebble Beach Concours d'Elegance for 2002^[6]
• A 1931 Voisin C20 Mylord Demi-Berline won Amelia Island Concours d'Elegance Best of Show for 2009 and subsequently sold in 2010 Amelia Island sale for $2,750,000^[7]
• A 1934 C-25 Aérodyne owned by Peter and Merle Mullin won best of show at the Pebble Beach Concours d'Elegance for 2011^[8]
• A 1935 Avions Voisin C25 Aérodyne was auctioned in Pebble Beach, California on 18 August 2013 for a price tag of $1,925,000.^[9][10]
• A 1934 Voisin C-27 Aérosport won the Concours d'Elegance at Hampton Court Palace in London for 2021^[11]