Buchet (French: [by.ʃɛ]) was a French motorcycle and automobile manufacturer between 1899 and 1930.

Société Buchet was founded in 1888 at Levallois-Perret as a producer of lamps. In 1899 Élie-Victor Buchet began to manufacture engines for auto-makers. Buchet engines were also used to power other manufacturers' aircraft (from 1906), and motorcycles.

It was not till 1911, initially at Levallois-Perret, and after 1919 at Billancourt, that Buchet started to produce cars of its own.

In 1919 the company was purchased by Gaston Sailly and renamed Gaston Sailly, Moteurs et Automobiles Buchet, with a new factory at Billencourt. The cars continued to be branded with the "Buchet" name, however.

By the end of the decade Buchet was one of a number of automakers to find itself competed out of business by France's by now increasingly dominant larger auto-makers. Activity ceased at the factory at the end of 1929, and in 1930 Buchet went out of business.

The first Buchet automobile was a 12/20 hp model with a 4-cylinder 1996 cc engine and a three speed transmission.

During the early part of the war, between 1914 and 1915, Buchet were delivering chassis to the Hollingdrake Automobile Company in Stockport, England. Each included a four-cylinder 10HP side-valve engine and a transmission. Hollingdrake mounted their own bodies - mostly open two-seaters and coupés - and sold the Anglo-French car branded as the Ascot, priced at 195 British pounds.

At the 15th Paris Motor Show in October 1919 Buchet were exhibiting a 1,456 cc (8CV/HP) engined car. Its wheelbase was 2,300 mm (90.6 in).