Objective <p>Korean immigrants in the U.S. face cultural and language barriers, increasing their diabetes risk and hindering management. This study aims to review previous research and explore factors influencing type 2 diabetes self-management among Korean immigrants in the United States.</p> Method <p>A systematic review was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The literature was reviewed in October 2024, using five databases: PubMed, EMBASE, PsycINFO, CINAHL, and the Cochrane Library. The following keywords were used in the search strategy: American Korean, Korean immigrants, Diabetes Mellitus, Type 2, insulin resistance, self-care, self-management, health behavior, and disease management. The search was limited to studies involving human participants, adults, and English-language publications.</p> Results <p>14 studies were selected and reviewed. Five key themes were identified: Challenges in following a diabetes diet and change of lifestyle, language barriers and health literacy, social support and family influence, culturally tailored interventions, and psychological issues in diabetes self-management.</p> Conclusion <p>This systematic review indicates that Korean immigrants have culturally unique barriers and risk factors that hinder effective diabetes self-management. Further research should guide the design of culturally tailored interventions and educational programs to reduce the health disparities and inequalities in the ethnic minority population.</p>