This essay examines the phenomenon of Football (soccer) Club supporter culture in terms of nationalism and community. Specifically, this essay seeks to understand the intersections of identity, belonging, and “national” allegiance (both literal and metaphorical flag-waving) within association football (largely) and how the sport promotes nationalistic-feelings of belonging within very diverse supporter groups. Through an exploration of Atlanta United FC’s culture, imagery, and ethos, I seek to evaluate the phenomenon of a very new club within a very old tradition. This essay starts with a review of literature discussing nationalism and identity, moves to a review of literature focusing on football as a particularly effective vehicle for the building of nationalism and identity, and ends with an analysis of Atlanta United FC’s framework and branding. Finally, the essay concludes with an attempt to situate the phenomenon of Atlanta United FC with other larger discussions of rising nationalism within the US (politically and socially).