The National Motor Vehicle Company was an American manufacturer of automobiles in Indianapolis, Indiana, between 1900 and 1924.

National produced a range of four, six, and twelve-cylinder passenger vehicles, as well as numerous successful racing cars.

In 1903, the company began producing internal combustion-engined cars with four-cylinder engines made by Rutenber.

[2] National introduced one of the first six-cylinder engines in the 1906 model range, which remained available until the breakup of the company.

[3] The Sextet used a Continental side-valve six-cylinder, modified by National engineers with an overhead valve head.