The Arab was a high-performance English automobile designed by Reid Railton and manufactured in Letchworth, Hertfordshire, between 1926 and 1928.

[3] Leyland had made 50 four-cylinder engine blocks intended to be used in fast delivery vans, but the project was not proceeded with.

A prototype was built to test the new engine using an Enfield-Allday chassis and the car taken to Brooklands for the 1924 Easter Meeting.

Production of two variants was started in 1926 at the Letchworth works, a low-chassis sporting model and a high-chassis touring type.

[5] The remaining components were bought by Thomson & Taylor, where Railton was working, based at Brooklands and a few more cars were assembled.