Ports are an important player in the world, due to their role in global production and distributions systems. Theyare major intermodal transport hubs, linking the sea to the land. For all ports, a key requirement for commercialand economic viability is to retain ships using them and to remain accessible to those ships. Ports need to findapproaches to help them remain open. They must ensure their continued economic viability. At the same time,they face increasing pressure to become more environmentally and socially conscious. This paper examines theapproach taken by the Port of Gävle, Sweden, which used contaminated dredged materials to create new landusing principles of Circular Economy. The paper demonstrates that using Circular Economy principles can be aviable way of securing a port's future and contributing to its sustainability, and that of the city/region where itoperates.