Nichirei Corporation (株式会社ニチレイ, Kabushiki-gaisha Nichirei) is one of Japan's top producers of frozen foods and a leader in cold storage warehousing, headquartered in Tokyo.

Operating through around 80 subsidiaries and affiliates worldwide, its businesses include processed food; logistics; marine products (chiefly roe, shrimp, and octopus); meat and poultry; real estate; and biosciences.

The company's bioscience work includes antibody development and manufacturing, immunology products, and natural materials processing.

It was established in accordance with the Fisheries Control Ordinance that was enacted on 19 May 1942, as a central agency to control seafood-related businesses such as sales of marine products, ice production, and refrigerated storage.

On 1 December 1945, the day after the control ordinance was abolished (30 November 1945), the company was reorganized as a privately held company governed by the commercial code, and was renamed Nippon Reizo Co. Ltd.