<p>We conducted a randomised controlled trial of an online benefits-finding expressive writing intervention for survivors of sexual assault and/or harassment. A total of 161 adult survivors completed state measures of internalised stigma (self-blame and self-shame) and perceived control over recovery immediately before and after being asked to write about the benefits of being a survivor of sexual victimisation (SV). Effects were compared to an open-reflection control condition in which participants were asked to write about their experiences of SV more generally. Although both sets of instructions were associated with reduced internalised stigma and improved control over recovery, mediation modelling revealed that only in the benefits-finding group were these improvements related to positive insights made during expressive writing and mediated by increased posttraumatic growth (PTG). With open-reflection, improvements were instead related to negative insights and were not mediated by PTG. These findings suggest that benefits-finding expressive writing can bring about positive change in SV survivors. This supports its use as a brief digital therapeutic exercise for this population, perhaps as a supplement to traditional psychotherapy.</p>