Stigma is a social process that impedes access to support for mental health conditions and alcohol and other drug (AOD) use, particularly for people from migrant and ethnic minority backgrounds. There is limited understanding, however, of people's experiences of stigma, the underlying drivers, intersections with ethnicity, gender, and citizenship status, and how powerful discourses and social institutions create and perpetuate systems of stigma. This review aims to synthesise and critically analyse qualitative evidence to understand how stigma associated with mental health conditions and AOD use operates among people from migrant and ethnic minority groups.

Qualitative evidence will be identified using MEDLINE, Embase, PsycINFO, CINAHL, Applied Social Sciences Index and Sociological Abstracts. Two reviewers will screen the titles, abstracts and full-text articles. Eligible studies will include original, empirical, peer-reviewed qualitative evidence, published in English since 1990. Studies must examine stigma in relation to mental health conditions, illicit drug use or alcohol consumption among participants who are from migrant and ethnic minority backgrounds. Studies will be critically appraised using the Joanna Briggs Institute Critical Appraisal Checklist for qualitative studies and the level of confidence in the findings will be assessed using Confidence in the Evidence from Reviews of Qualitative research. Data will be analysed using the 'best fit' framework synthesis approach, drawing on the Health Stigma and Discrimination Framework.

This review will provide an in-depth understanding of the stigma associated with mental health conditions and AOD use among people from migrant and ethnic minority backgrounds. The findings will inform culturally responsive interventions that aim to reduce the negative impact of stigma on individuals, families and communities.

PROSPERO CRD42021204057.