Cultural psychiatry has evolved along 3 lines: 1) cross-cultural comparative studies of psychiatric disorders and traditional healing; 2) efforts to respond to the mental health needs of culturally diverse populations that include indigenous peoples, immigrants, and refugees; and 3) the ethnographic study of psychiatry itself as the product of a specific cultural history. These studies make it clear that culture is fundamental both to the causes and course of psychopathology and also to the effectiveness of systems of healing. The provision of mental health services in multicultural societies has followed different models that reflect their specific histories of migration and ideologies of citizenship. Globalization has influenced psychiatry through socioeconomic effects on the prevalence and course of mental disorders, changing notions of ethnocultural identity, and the production of psychiatric knowledge. A cultural perspective can help clinicians and researchers become aware of the hidden assumptions and limitations of current psychiatric theory and practice and can identify new approaches appropriate for treating the increasingly diverse populations seen in psychiatric services around the world.