John Ross Tower is a condominium skyscraper in the South Waterfront neighborhood in Portland, Oregon. It stands at a height of 99.1 m, the first building in the district to reach the maximum height allowed for development and Portland's seventh-tallest building. It is also the largest residential building built in Portland since the KOIN Center in 1984. It was designed by the firm of TVA Architects and topped out in 2007.