We identified a total of 21 relevant documents by searching Health Systems Evidence and running targeted searches in PubMed, with the search strategy for these databases detailed in Box 2. A document was included when it directly addressed the question posed for this rapid synthesis (i.e., it was specific to an organizational culture supportive of evidenceinformed policymaking) or, when such evidence was sparse, when it addressed a more general question about organizational culture that can be applied to the specific instance of evidence-informed policymaking. Among the documents, we found one overview of systematic reviews, eight systematic reviews, four nonsystematic reviews, seven primary studies, and one assessment tool that were deemed relevant. We provide more details about each review and single study in Appendix 1 and 2, respectively