The article considers the contributions of Gee's Discourse theory to the study of multiethnic identity among mixed heritage students. By framing experience within social context, activity, and interaction, I argue that Discourse theory facilitates a conceptualization of ethnic identity as a situated phenomenon emerging at the intersection of the individual and the collective. Drawing on the life histories of a diverse group of mixed heritage students, the article details how Discourse theory provides a particularly powerful lens for exploring the social processes influencing identity development across contexts, such as those related to enculturation within multiple heritage communities.