Japan Energy Corporation (株式会社ジャパンエナジー Kabushiki-gaisha Japan Enajī) is a Japanese petroleum company, which is a subsidiary wholly owned by Nippon Mining Holdings, Inc (新日鉱ホールディングス株式会社 Shin-Nikkō Hōrudingsu Kabushiki-gaisha). Nippon Mining Holdings Group has four main business areas, petroleum, non-ferrous metals, electronics materials and other operations. It has had several previous names, Nippon Mining among them.
The petroleum products of Japan Energy Corporation are sold by filling stations called JOMO stations.
In 2010 Japan Energy merged with Nippon Oil to become JX Holdings.