A joint venture with the former Nissho Iwai Corporation (now: Sojitz Corporation) that manufactures, processes, distributes and sells steel products.

A wholly owned subsidiary established in 2013.
The company is engaged in trading of steel raw materials, non-ferrous metals and others on a global basis.

The company is engaged in trading of mineral resources in Japan.
Mitsubishi Corporation Unimetals Ltd. was reborn as Mitsubishi Corporation RtM Japan Ltd. on April 1, 2013.

A manufacturer of aluminum secondary alloys which is jointly owned by Nippon Light Metal Company, Ltd (55%) and MC (45%). It aims to help protect the environment by conserving resources and energy through the business of aluminum recycling, which is becoming increasingly important for the realization of a recycling-based society.

Established in 1971, Triland Metals Limited is a wholly-owned subsidiary of Mitsubishi Corporation. It is based in London, the central market for non-ferrous metal futures trading. The company is Japan's only one ring member (official member) of the London Metals Exchange (LME) and is carrying out brokering and trading activities to satisfy the needs of the industrial world.

Mitsubishi Development Pty Ltd is a wholly owned subsidiary of MC in Australia, established in 1968. At present, the Company has capital stakes in several Australian coal mines in partnership with major resource companies and produces approximately 30 million tons of coal a year through its own stakes, making it one of the top five producers in Australia.

An investment company that invests in the Escondida copper mine in Chile.

An investment company that invests in the Los Pelambres copper mine in Chile.

An investment company that invests in Anglo American Sur S.A. in Chile.

An aluminum smelter in Mozambique, Africa.

An investment company investing in Boyne aluminum smelter in Australia.

Hernic Ferrochrome (Pty) Ltd is engaged in the mining of chrome ore and the manufacture and sale of ferro-chromium in South Africa.

An investment company that invests in PT Weda Bay Nickel, which operates the Weda Bay Project in Singapore.

PT Weda Bay Nickel is responsible for investigating the business feasibility of the Weda Bay Project and acquiring the local licenses and approvals necessary for operation of the business.