For almost three decades, "global culture" has been a significant area of inquiry for communication studies researchers. A portmanteau of "global" and "culture," "global culture" can be conceived as a whole way of life of the world's people, and also cultural works that are produced and commonly consumed by people who live within and across many countries, not just one country. Taking this broad definition of global culture as a useful heuristic, this chapter contextualizes, summarizes and critically assesses three narrower meanings of "global culture." These articulations of global culture include: 1) mediated sociality as a whole way of life (e.g., the "global village"); 2) an Empire's universalization or trans-nationalization of a particular way of life (e.g., "cultural imperialism"); and, 3) cultural works that are financed, produced, circulated and consumed by people across the borders of nation-states (e.g., "global popular culture").