Introduction: Religious coping is a crucial psychological mechanism for individuals managing chronic health conditions and fostering emotional resilience and adaptation. Nonetheless, this extant research has predominantly focused on Western contexts, thereby creating a lacuna in our comprehension of their significance within non-Western Asian societies. Objective: This scoping review investigated the measurement of religious coping and its impact on mental health outcomes among Asians with chronic illnesses. Method: A scoping review based on the framework developed by Arksey and O’Malley was conducted. Literature was sourced from Scopus, Google Scholar, and PubMed using Boolean search terms related to religious coping, chronic illness, and mental health. The inclusion criteria were empirical studies on religious coping in Asian populations, published between 2015 and 2025. Thematic analysis was then performed. Results: Nine studies were included in this review. The studies revealed various considerable scales to measure religious coping. The Religious Coping Scale (RCOPE), Brief-RCOPE, and the Spiritual Coping Questionnaire (SCQ) can be utilized. Positive religious coping (PRC), including prayer, meditation, and community support, was associated with reduced anxiety and depression and improved quality of life. Negative religious coping (NRC) includes perceptions of divine punishment, exacerbated psychological distress, and non-adherence to treatment. Cultural diversity has shaped coping styles: Islamic societies emphasize faith-based acceptance, Hindu traditions emphasize karma-based reasoning, and Buddhist communities emphasize mindfulness. Conclusion: Religious coping in the Asian context could be measured utilizing various valid and reliable scales. Moreover, religious coping significantly influences mental health outcomes among Asian patients with chronic illness. Future research needs to focus on culturally adapting religious coping scales in the Asian chronic illness context.