The Leyland Swift is a bus chassis made by manufacturer Leyland Motors. The chassis was built from 1987 to 1992.

The design of the chassis was based on the Leyland Roadrunner. In contrast to the truck, the Swift had the engine mounted behind the front axle. The chassis was available with a wheelbase in a length of 3.6 m or 4.4 m. It mainly came with a turbocharged six-cylinder diesel engine from Cummins along with synchronised transmissions, an alternative automatic transmission from Allison available was also available.

The chassis were completed with bodies from different manufacturers. Both travel and city buses were produced. Wadham Stringer modified the Vanguard II structure to fit the Swift. Some chassis were also available as portable libraries.