Research on responses to sexual violence have often failed to take into account gender and exposure to gender equality. Cultural norms and awareness of sexual violence issues must be considered when examining decision-making in morally ambiguous situations, especially in Indonesia, where collectivist culture makes power relations and gender bias particularly salient. In a cross-sectional online survey ( N = 504) of university communities, we tested whether rape myth acceptance (RMA) mediates Moral Foundations Theory (MFT) and two outcomes: institutional betrayal (IB) and sexual violence claim (SVC), while controlling for gender and prior exposure to gender-equality information. We hypothesized that RMA would mediate the influence of each MFT dimension on both IB and SVC. Findings partially supported the hypothesis: For IB, RMA fully mediated the effects of several MFT dimensions (e.g., Harm/Care, Fairness, and Purity) and partially mediated the effect of the Binding composite. For SVC, RMA showed a mixed pattern: full mediation for Ingroup, but partial mediation for Harm/Care, Fairness, Authority, Purity, and the Individualizing composite. Previous exposure to gender-equality independently predicted higher SVC. Put together, these highlight the role of RMA as a central psychological bridge between moral values, judgments regarding institutional responses, and recognition of sexual violence. Given Indonesia's institutional and legal contexts, we interpret cultural nuances with caution, and focus on mechanisms preceding the outcome. Practically, interventions that (a) reduce RMA, and (b) foster individualizing moral values (e.g., Care; Fairness) may improve institutional responses and public recognition of sexual violence. © 2026 The Authors.