Algoma Mariner is a Canadian lake freighter delivered to Algoma Central on 31 May 2011. The bulk carrier was the first new Canadian-flagged vessel on the Great Lakes in 25 years. Algoma Mariner is a Seawaymax vessel, designed to carry dry bulk through the Saint Lawrence Seaway and Great Lakes. The vessel was constructed at the Chengxi Shipyard in China and is currently in service.

The Algoma Central Corporation is the result of a reorganization of the Algoma Central Railway in 1990. The company claims assets in excess of $400 million and revenue of $280 million. Corporate headquarters is located in St. Catharines, Ontario, Canada.