Fuji Rock Festival is an annual rock festival held in Naeba Ski Resort, in Niigata Prefecture, Japan. The three-day event, organized by Smash Japan, features more than 200 Japanese and international musicians, making it the largest outdoor music event in Japan. In 2005, more than 100,000 people attended the festival.

Niigata Prefecture is a prefecture in the Chūbu region of Honshu of Japan. Niigata Prefecture has a population of 2,131,009 and is the fifth-largest prefecture of Japan by geographic area at 12,584.18 km2 (4,858.78 sq mi). Niigata Prefecture borders Toyama Prefecture and Nagano Prefecture to the southwest, Gunma Prefecture to the south, Fukushima Prefecture to the east, and Yamagata Prefecture to the northeast.