Gambling is of public health importance due to the potential impacts of gambling on individuals and their communities.

This review draws on evidence to address: ‘What is known about gambling in lesbian, gay, bisexual, trans and queer+ (LGBTQ+) communities?’ including (i) the prevalence of gambling harm; (ii) the lived experience of gambling harms; (iii) the interventions and service barriers and (iv) the risk and protective factors against gambling harms.

The identified peer-reviewed and grey literature papers were screened against inclusion and exclusion criteria by two reviewers prior to extracting data. Eligibility for inclusion was assessed via the Critical Appraisal Skills Programme (CASP) framework and a Weight of Evidence approach.

PubMed, Web of Science, ProQuest, Google Scholar and Cochrane were searched for peer reviewed and grey literature published from June 2000 to June 2023.

Data extraction tables were developed to include the characteristics, methods, sample and key findings for each study.

19 papers were included, which showed mixed prevalence of problems with gambling among lesbian, gay and bisexual populations. There is more consistent evidence that trans and gender diverse people experience higher levels of problems with gambling compared with cisgender (not trans) people. Limited research focused on the lived experience or the wider impact of gambling harm among LGBTQ+communities. Risk factors for gambling harm included minority stress, societal stigma, discrimination and isolation. Protective factors against gambling harm included higher levels of support, positive social interaction and mainstream community connectedness. No studies were identified with gambling interventions specific to LGBTQ+people. General health service barriers included professionals’ use of pathologising language or a lack of cultural competency and education around LGBTQ+issues.

Research on LGBTQ+ gambling harm remains distinctly limited. Further, population-based surveys as well as in-depth qualitative research are needed to develop a comprehensive understanding of gambling in LGBTQ+communities. Research should be undertaken in collaboration with LGBTQ+peers. A better understanding of gambling could inform a whole systems approach with targeted interventions to protect against gambling harm and to promote greater health equity. Open Science Framework registration number (http://osf.io/jf85y/).