The transition from competitive athletics to postcareer life presents unique challenges driven by shifts in identity. This study examined how multiple identity dimensions influence postcareer adaptation among South Korean student-athletes. Using a threestep approach to latent profile analysis with 393 South Korean student-athletes (150 women; Mage = 20.05 years), three distinct identity profiles, high multidimensional (71%), low multidimensional (24%), and exclusive athletic identity (5%), were identified based on measures of athletic, student, and exercise identity. Gender, career years, and national team experience significantly predicted profile membership. Student-athletes with high multidimensional identity profiles reported significantly greater perceived social support, higher likelihood of long-term physical activity adherence, and lower career concerns compared with other profiles. Results suggest that certain demographic groups, including women and national team experience, may benefit from targeted support for identity development and point to the need for culturally sensitive interventions to support holistic identity development and promote successful postcareer adaptation.