The Yamaha FZ8 and FAZER8, also known as the FZ8N and FZ8S, are motorcycles produced since 2010 by Yamaha Motor Corporation for sale in the United States, Europe, Canada, Australia and New Zealand. The FZ8 is a naked bike, while the virtually identical FAZER8 features a half fairing and ABS. The FZ8 and FAZER8 replace the smaller capacity FZ6 and FZ6 FAZER, although as of July 2010 these continue to be sold in other markets.

The Yamaha FZ6, also known as the FZ6 FAZER is a 600 cc (37 cu in) motorcycle that was introduced by Yamaha in 2004 as a middleweight street bike built around the 2003 YZF-R6 engine. The engine is retuned for more usable midrange power. As a multi-purpose motorcycle it can handle sport riding, touring, and commuting. In 2010, the FZ6 was replaced by the fully faired FZ6R in North America, and the XJ6 Diversion, XJ6 N and XJ6 Diversion F in Europe. The FZ6 styling was continued in 2011 with the Yamaha FZ8 and FAZER8.