Over the last three decades, the conceptual and theoretical importance of team identification has increased. However, many previous studies have confused role identity-based team identification with the group identity-based approach, failing to distinguish between these two constructs. In light of this concern, the current study presents a thorough review of the key concepts and theories underlying team identification. Through a conceptual analysis, we explained the construct of team identification and its impact on consumer behavior on the basis of four relevant theories (identity theory, social identity theory, organizational identification theory, and the consumer-company identification framework). Furthermore, an empirical study, which was a complementary part of this research, showed that the impact of group identity-based team identification on consumers' collective self-esteem and behavioral loyalty was stronger than that of role identity-based team identification. Our conceptual arguments and directions for future research contribute to the advancement of knowledge on sport fans.