101 Marietta Street, formerly Centennial Tower, is a , 36-story skyscraper in downtown Atlanta, Georgia. The building was completed in 1975 and renovated in 1998, resulting in a name change, new facade, and chevrons added to the building which increased its original height by . The property is considered a class "A" office building consisting of 600,000 square feet.
The U.S. Census Bureau has its Atlanta regional office in Centennial Tower.