thumb|Mitsubishi Aluminum Co. logo
is a Japanese manufacturer of aluminium related products. It is one of the core Mitsubishi companies. Established in 1962, it produces aluminum, aluminum alloy mill products and fabricated products.
Shareholders
- Mitsubishi Materials Corporation (MMC)
- Mitsubishi Chemical Corporation
- Mitsubishi Corporation
- Mitsubishi Heavy Industries, Ltd.
- The Bank of Tokyo-Mitsubishi, Ltd.
- Mitsubishi Electric Corporation
- Mitsubishi Estate Co., Ltd.
- The Mitsubishi Trust and Banking Corporation
- Meiji Yasuda Life Insurance Company
- Tokio Marine & Nichido Fire Insurance Co., Ltd.