Mine Circuit (みねサーキット) was a 3.331 km (2.070 mi) motor racing circuit in Nagao, Nishiatsu-cho, Mine, Yamaguchi Prefecture, Japan.

It used to be known as Nishinihon.

The track closed in February 2006 as it was sold to Mazda for development purposes.

[1] It was one of the main circuits in Japanese motorsport; until 2005, every year, one or more races of the most important national categories, (the Japan GT Championship and Formula Nippon series) were held at this circuit.

The fastest official race lap records at the Mine Circuit are listed as: