Citicorp Railmark Inc. (trading as Citirail Express) is a company that leases locomotives to railroads as needed. The company is a subsidiary of Citibank, which itself is a division of Citigroup. It was formerly known as Citicorp Aerolease, and was first formed on May 13, 1970.
Citirail previously owned a fleet of 167 locomotives, but now only retains one unit. The remainder were sold or leased, as detailed below: