Downtown Atlanta is the central business district of Atlanta, Georgia, United States. The largest of the city's three commercial districts, it is the location of many corporate and regional headquarters; city, county, state, and federal government facilities; Georgia State University; sporting venues; and most of Atlanta's tourist attractions. It measures approximately four square miles, and had 26,850 residents as of 2017. Similar to other central business districts in the United States, it has recently undergone a transformation that includes the construction of new condos and lofts, renovation of historic buildings, and arrival of new residents and businesses.

Atlanta is the capital and most populous city in the U.S. state of Georgia. It is the seat of Fulton County, and a portion of the city extends into neighboring DeKalb County. With a population of 498,715 living within the city limits, Atlanta is the eighth most populous city in the Southeast and 38th most populous city in the United States according to the 2020 U.S. census. It is the core of the much larger Atlanta metropolitan area, which is home to more than 6.3 million people, making it the sixth-largest U.S. metropolitan area. Situated among the foothills of the Appalachian Mountains at an elevation of just over 1,000 feet (300 m) above sea level, Atlanta features unique topography that includes rolling hills, lush greenery, and the densest urban tree coverage of any major city in the United States.