The Volvo B7TL is a low-floor double-decker bus chassis which was launched in 1999 and replaced the 2-axle version of the Volvo Olympian. It was built as the British bus operators seemed hesitant to purchase the B7L double decker with a long rear overhang.

A low-floor bus is a bus or trolleybus that has no steps between the ground and the floor of the bus at one or more entrances, and low floor for part or all of the passenger cabin. A bus with a partial low floor may also be referred to as a low-entry bus or seldom a flat-floor bus in some locations.