The Atomette was a British three-wheeled cyclecar manufactured by Allan Thomas in Cleveland Street, Wolverhampton in 1922.
The car was powered by an air-cooled 3.5 hp Villiers two-stroke engine driving the single rear wheel through a three-speed gearbox. The body had no pretence of having a radiator. Prototypes & early cars were single seat and cost 90 guineas (ã94.50). Later, cars were made which seated two people side by side. These cost 95 guineas (ã99.75). The car could be ordered in a choice of blue, grey or green.