Volvo B57 was a front-engined single-decker bus built by Volvo between 1960s and 1980s. It was equipped with the Volvo TD70-series engine.

Volvo B57 could be built in 3 different wheelbase lengths: 5 metres (B57-50), 5.5 metres (B57-55) and 6 metres (B57-60).

This vehicle was rare in the United Kingdom.

Singapore Bus Services introduced a fleet of NZMB (New Zealand Motor Body) bodied B57s in the early 1980s. Upon their retirement, all 300 were bought by Bus Éireann of the Ireland between 1994 and 1998 for use on school bus duties in rural areas until their withdrawal in 2004. Some of these have been preserved by various Irish transport enthusiasts.