Lesbian, gay, bisexual, transgender, queer and other diverse sexual orientations and gender identity groups (LGBTQ+) face high rates of poor mental health. In the most severe and emergent of instances, inpatient psychiatric care may be required. LGBTQ+ people report experiences of mistreatment in healthcare settings broadly, such as denial of healthcare services and harassment from healthcare providers and other patients. However, little is known about the experiences of LGBTQ+ people in inpatient psychiatric care settings, specifically. The purpose of this review was to assess the existing literature for descriptions of LGBTQ+ people's experiences within inpatient psychiatric care. We searched multiple databases (i.e., PubMed, PsychINFO, CINAHL, Web of Science and Google Scholar) for peer-reviewed articles that described the experiences of LGBTQ+ people within inpatient psychiatric care that were published in English. The included articles (N = 14) were analysed using a conceptual model of stigma and organised within those strata (structural, interpersonal and individual stigma) across the inpatient experience, (admission, inpatient unit, and discharge). Themes identified included: noninclusive intake tools and pervasive misgendering during the admission process; lack of healthcare infrastructure, inadequate training and lack of cultural humility, pervasive discrimination and victimization, silencing of LGBTQ+ patients, and feelings of fear and shame while on inpatient units, and lack of community resources during the discharge process. Clinicians should consider the perspectives and experiences of LGBTQ+ people to enact identity-affirming care practices that may increase mental healthcare engagement and improve long-term mental health outcomes.