Background: Cold Water Immersion (CWI) has been historically utilized as a therapeutic practice. Recent interest in its applications for mental health has stimulated scientific inquiry into its potential benefits and mechanisms of action. Methods: This article systematically reviews the therapeutic applications of CWI for mental health conditions. Search engines such as PubMed, Google Scholar, and Cochrane Library were utilized. Key search terms included "Cold Water Immersion,” "Mental Health,” "Depression,” "Anxiety,” and "Stress.” Articles were selected based on relevance, focusing on physiological and psychological responses to CWI and specific studies exploring its role in mental health. Safety considerations and precautions, therapeutic applications, and potential patient populations were also discussed. Results: CWI activates the sympathetic nervous system, releasing stress hormones and endorphins, improving mental well-being. Physiological benefits were observed, including anti-inflammatory effects, improved circulation, and enhanced immune function. CWI demonstrates potential as an adjunct treatment for depression, anxiety, pain-related disorders, and stress. However, safety considerations are essential, including the risk of hypothermia, cardiovascular, and respiratory concerns, and cold shock response. CWI should complement, not replace, traditional treatments and is best suited for specific patient populations. Conclusion: CWI presents a promising complementary approach to mental health, with initial studies indicating benefits for various conditions. Further research is necessary to understand its potential fully and integrate it effectively into therapeutic regimens.