An Asama shrine (浅間神社 Asama jinja, Sengen jinja?) is a type of Shinto Shrine in Japan centered on the worship of the kami of volcanos in general, and Mount Fuji in particular.
Per the Jinja Honchō, there are approximately 1300 Asama shrines in the country, centered primarily in Shizuoka Prefecture and Yamanashi Prefecture, and to a lesser extent in the prefectures of the Kantō region and Aichi. Almost all Asama Shrines are within sight of Mount Fuji. Where this is not possible because of distance or obstructions, a miniature replica of Mount Fuji known as a Fujizuka (富士塚?) made from rocks from the mountain was often erected within the shrine grounds. The head of all Asama shrines is the Fujisan Hongū Sengen Taisha, located in Fujinomiya, Shizuoka.
In 2013 the Fujisan Hongū Sengen Taisha, Yamamiya Sengen Shrine, Murayama Sengen Shrine, Suyama Sengen Shrine, Fuji Sengen Shrine, Kawaguchi Asama Shrine, and Fuji Omuro Sengen Shrine were added to the World Heritage List as part of the Fujisan Cultural Site.
The primary kami at Asama shrines is Konohanasakuya-hime, sometimes in combination with her father, Ōyamatsumi-no-Mikoto and/or sister Iwanaga-hime. Konohanasakuya-hime appears in both the Kojiki and Nihonshoki and appears to have originally associated with protection against fire, per the stories which appear in both chronicles. However, there is no specific reference which explains how she came to be associated with Mount Fuji at some point in the Muromachi or Edo period.