The Volvo B9L (also known as the Volvo 7500, Volvo 7700 or Volvo 7900 for integral models) was a fully low-floor single-decker bus chassis constructed by Volvo Buses from 2005 until 2013, replacing the Volvo B7L and Volvo B10L. An articulated model, known as the Volvo B9LA, is also available. It was superseded by the Volvo B5LH in Europe. Additionally, the B9L reintroduced CNG engines, an option unavailable in its predecessor, the B7L. These versions replaced much older predecessor, the B10L. It was the last low-floor bus chassis from Volvo to be available with such option.