Many transgender individuals face inequities, discrimination, and sometimes even a lack of transgender-specific knowledge in health care settings. Educational curricula can address such disparities and help future health professionals to become more knowledgeable, confident, and well-prepared for addressing the needs of transgender individuals. This systematic review aims to summarize current training interventions about care of transgender individuals for health and allied health students, and to analyse the effects of the respective intervention. A total of six databases (Pubmed, MEDLINE, Scopus, Web of Science, Embase and SciSearch) were screened for original articles published between 2017 and June 2021. Search terms and eligibility criteria were pre-specified, and after a structured selection process 21 studies were included into further analysis. Extracted data contained information on general study properties, population, design, program format and outcomes of interest. A narrative synthesis was used to summarize detected results. Study quality was assessed for each individual study. A self-developed 18-item checklist combining criteria of two prior published tools was used to assess overall quality of quantitative studies. For qualitative studies a 10-item checklist by Kmet et al. [HTA Initiat, 2004] was applied. Eligible studies were designed for multiple health or allied health profession students, and varied widely regarding program format, duration, content, and assessed outcomes. Almost all (N = 19) interventions indicated improvements in knowledge, attitude, confidence and comfort levels or practical skills concerning care for transgender clients. Major limitations included the lack of long-term data, validated assessment tools, control groups and comparative studies. Training interventions contribute to prepare future health professionals to deliver competent and sensitive care and which may improve the prospective experienced health care reality of transgender individuals. However, currently there is no common consensus about best practice of education. Additionally, little is known about whether detected effects of training interventions translate into noticeable improvements for transgender clients. Further studies are warranted to assess the direct impact of specific interventions in the light of the respective target populations. [ABSTRACT FROM AUTHOR]