Number of wineries: 85

​Japanese wine production: 5,189 kl

Known as the Napa Valley of Japan, #1 in terms of number of wineries and grape/wine production, grape variety most produced in Yamanashi is Koshu, accounts for roughly 45% of its total production.

Number of wineries: 38

​Japanese wine production: 3,950 kl

Second largest region in Japan in terms of wine production, wine industry highly supported by local government, regions in Nagano that produce wine are branded as the 'Shinshu Wine Valley' (Nagano is also known as 'Shinju') with further classification into 4 smaller valleys: Nihon Alps Wine Valley / Chikumagawa Wine Valley / Kikyogahara Wine Valley / Tenryugawa Wine Valley

Number of wineries: 15

​Japanese wine production: 1,159 kl

Located in the Honshu Island facing the Sea of Japan with long hot humid summers and long snowy winters, number one prefecture in Japan in terms of production of Delaware Wine.

Number of wineries: 11

​Japanese wine production: 580 kl

Prefecture on the northeastern coast of Honshu, Japan's main island, lwate is home to long-standing wineries like Edelwein.

Number of wineries: 32

​Japanese wine production: 427 kl

Region includes the Greater Tokyo Area and encompasses seven prefectures: Gunma, Tochigi, Ibaraki, Saitama, Tokyo, Chiba and Kanagawa. 

Number of wineries: 8

​Japanese wine production: 394 kl

Capital city of its namesake prefecture, in western Japan, home to renown wineries like deomaine tetta.

Number of wineries: 8

​Japanese wine production: 139 kl

City on Japan’s Honshu Island that was largely destroyed by an atomic bomb during World War II is home to a few smaller-scale wineries.

Number of wineries: 10

​Japanese wine production: 339 kl

​Prefecture most known for its superior quality of rice production is also home to a few wineries that produce outstanding Japanese Wine.