Radisson Blu is the brand name for Radisson hotels primarily outside the United States, including those in Europe, Africa and Asia. The hotels were operated by Radisson Hospitality AB (former Rezidor Hotel Group), of which Radisson Hospitality, Inc. is the main stakeholder. Scandinavian Airlines System (SAS) was previously a major shareholder and licensed its brand for Radisson SAS hotels. Following the withdrawal of SAS from the partnership on February 4, 2009, the name was gradually replaced by Radisson Blu.

Radisson Blu operates 158 hotels, with 42 projects in development. Radisson Blu previously did not exist within the borders of the United States. The first Radisson Blu in the United States opened in downtown Chicago in Aqua, a skyscraper, in November 2011. The second one opened in March 2013 in Bloomington, Minnesota and is connected to the Mall of America. Former Radisson Plaza hotels in Philadelphia and Minneapolis were converted to Radisson Blu.