The concept of group identification has been widely discussed in the fields of social psychology and social ontology. The debate has been somewhat unbalanced, however. The structure, nature, and experiential status of groups have been assessed widely and from several perspectives. Instead, the concept of identification as received considerably less attention. This is why the ongoing debate threatens to be misled by various conceptual ambiguities. These ambiguities concern first and foremost the target, structure, and temporal nature of identification. The present article offers a philosophical analysis of the concept and clarifies the conceptual ambiguities haunting the debate.