Although remembering is typically considered to be an individual cognitive activity, it frequently has social aspects in every day life. I discuss two ways in which memory is social. First remembering is often collaborative. For example, spouses depend on each other's memories as they try to remember the location of a theatre or the items they intended to buy at a supermarket. I will report research on collaborative memory in older couples that examines whether teamwork facilitates or impedes accurate recall. The importance of social factors is also evident in my second line of research. I examine how people's social identity affects their memories and judgments of injustices that occurred long ago.