 In addition to the growing literature on the ways in which technological resources contribute to remembering, there is a large and dynamic literature on the ways in which groups remember together. Or rather there are two distinct literatures here, one concerning small-scale groups, the other concerning large-scale groups. The former has been investigated primarily in psychology, exemplified by studies of remembering in married couples (Harris, Barnier, Sutton, &amp; Keil 2014) or in mother-child dyads (Reese, Haden, &amp; Fivush 1993). The latter has been investigated primarily in the social sciences and history, where, in what has been termed a “memory boom” (Blight 2009), an enormous amount of work on how nations and similar entities remember their pasts has appeared in recent years. One question of philosophical interest in this general area is the relationship between memory in small-scale groups and memory in large-scale groups. There is increasing interaction between the two literatures (Bietti &amp; Sutton 2015; Fagin, Yamashiro, &amp; Hirst 2013; Roediger &amp; Abel 2015), and it may turn out that similar processes of remembering unfold in both small-scale and large-scale groups. But small-scale and large-scale collective memory, as we will see, do appear to raise somewhat different issues, and it may turn out not to be a contingent matter that they have for the most part been studied in different disciplines.