| 55 Marietta Street | |
| Former Names: | Bank South Building Fulton National Bank Building |
| Location: | 55 Marietta Street NW Atlanta, Georgia |
| Coordinates: | 33.7557°N -84.391°W |
| Completion Date: | 1958 |
| Building Type: | Commercial offices |
| Roof: | 89.92m (295.01feet) |
| Floor Count: | 21 |
| Architect: | Wyatt C. Hedrick |
| Main Contractor: | Henry C. Beck Company |
| References: | [1] |
55 Marietta Street, formerly the Fulton National Bank Building and the Bank South Building is a 21-story, 89.9m (294.9feet) office building in Atlanta, Georgia. It was the tallest building in the city when completed in 1958 until surpassed by One Park Tower in 1961.[2] 55 Marietta Street is the site of the U.S. Post Office and Customs House (built 1878), which served from 1910 to 1930 as City Hall (demolished 1930s)[3]