Mealtimes shared with other people define how, what, how much, and with whom we eat. On such occasions, whether in private or public spaces, and as formal or informal events, our eating practices are inseparable from our interactions with other people. In this Editorial for the Special Issue on Interactional approaches to eating together and shared mealtimes, we provide an overview of the interdisciplinary field of research on eating together and shared mealtimes to illustrate the breadth and depth of work that has been developed in this area to date. The overview is divided into three broad clusters of research that focus primarily on (1) cultural or societal aspects, (2) individual outcomes, or (3) interactional practices. Commonalities across these clusters are discussed, the need for more research across a greater global and cultural diversity of eating practices is highlighted, and the potential for interdisciplinary collaboration on research on eating together and shared mealtimes across diverse scientific disciplines is explored. The papers in this Special Issue showcase a sample of contemporary work from within the cluster of research on interactional practices, and a brief overview of these papers is discussed. Finally, it is argued that as a common area of interest, social interaction as the foundation of eating practices within shared mealtimes poses considerable potential for interdisciplinary collaboration across scientific disciplines, and between scientists, professionals, and participants from the study populations.