The purpose of this qualitative phenomenological study was to explore whether the way mental health is conceptualized by older Iranian immigrants can influence their mental health-related practices. In-depth interviews were conducted with 15 Iranians who had immigrated to the United States after the age of 50. The findings from this study revealed that the older Iranian immigrants were reluctant to seek mental health care services in the United States. This resistance was largely attributed to the cultural differences in mental health conceptualization (language, definitions, and terminology) and lack of trust in the effectiveness of psychotropic medications. The findings of this study have implications for health and social service professionals who provide services to older immigrants, refugees, and minority populations whose mental health conceptualization may not be consistent with the biomedical model.