The Oxford Handbook of Psychiatric Ethics (the OHPE) examines ethical issues in twenty-first-century psychiatry and sets them in their social and political context. Key contextual developments for contemporary psychiatry include the rapid expansion of electronic communications, multiculturalism, new models of service delivery and new technologies, more oversight within stronger standards-based regulatory frameworks, and the emergence of more clinically embedded forms of practical ethics. These developments are reflected in the wide range and diversity of contributions to the OHPE. In addition to well-established areas of scholarship our contributors cover a variety of new and emerging topics: notable among these are peer support, co-production and other collaborative models of care, recovery, spiritual and religious aspects of psychiatry, non-European philosophy, and the emerging role of values-based practice. Diversity of content is further complemented by the diversity of perspectives represented by our contributors. Besides established figures in psychiatric ethics our authors include many new contributors to the field from disciplines representing both expertise-by-training (in areas ranging from philosophy to neuroscience) and expertise-by-experience as service users and/or as carers. The central importance of this latter perspective is reflected in our opening main section which brings together a small sample of the rapidly expanding expert voices from experience. We hope that read in conjunction with its sister volume, the Oxford Handbook of Philosophy and Psychiatry, and other books forthcoming in the series, the OHPE will contribute to the development of more collaborative models of service delivery as the basis of twenty-first-century mental health care.