A scalable intervention is needed to remove one of the most potent and persistent drivers of disparities in HIV testing, prevention, and linkage to care globally: clinician stigma toward key populations. Key populations at risk of HIV who experience and/or anticipate stigma from clinicians are less likely to initiate, engage in, and adhere to care, including HIV testing, prevention, and linkage to care services. Researchers have uncovered evidence-based stigma reduction tools that hold promise to reduce stigma among clinicians and narrow HIV disparities globally. Yet, a vehicle to deliver these tools to clinicians at large scale (i.e., beyond single clinics) is currently lacking. The long-term goal of this work is to address clinician stigma globally via the widespread implementation of evidence-based stigma reduction tools via a popular teletraining platform.