Portman Holdings is a real estate development and investment firm based in the United States. Founded in 1957 by John Portman, the company specializes in creating mixed-use properties, including hotels, office spaces, and residential buildings. The firm is known for its innovative architectural designs and urban development projects, often integrating art and culture into its spaces. Over the years, Portman Holdings has developed numerous iconic structures, contributing significantly to the urban landscape in cities across the country.