The independent island nation of Saint Lucia and surrounding Caribbean countries have fairly well-documented high reported rates of trauma, but limited training infrastructure for trauma-related mental health support and treatment services. This study addresses this disparity between high trauma exposure and sparse trauma-related resources by studying how a one-day training workshop impacted self-rated knowledge about trauma and stigma towards trauma survivors. The training was provided by a licensed clinical psychologist in partnership with a local women’s rights group. Participants (n = 41) included school counselors, nurses, psychiatric providers, health educators, and advocates on the island. Participants completed pre- and post-workshop measures examining the variables of interest. The one-day workshop provided training on trauma types, post-trauma reactions, options for treatment, and hands-on training for trauma crisis-management and short-term interventions. Following the workshop, participants reported increased knowledge of trauma, more accurate perceptions of its prevalence, better understanding of evidence-based treatments, and lower trauma survivor-related stigma. This is the first trauma-focused workshop tested in St. Lucia, where the need for such training is considerable given few treatment options for trauma survivors in this area. Work is underway to provide more expansive services for trauma across the Caribbean region, given these preliminary promising findings.