Background: Every year up to 700 mothers die in the United States due to pregnancy complications; at least two-thirds of these deaths are preventable. Despite the presence of state-level Maternal Mortality Review Committees (MMRCs), mortality rates have remained stagnant or increased in many places. Implementing best practices to improve MMRCs may help identify and address the causes of maternal mortality that may be preventable.Methods: We conducted a content analysis of evidence-based recommendations to improve MMRCs. Using a search of PubMed, we restricted our analysis to full-text papers published in English from 2010-2021 that included recommendations. Reviewer 1 (R1) analyzed the initial set of papers and removed any that did not meet the inclusion criteria. R1 coded the recommendations into categories. Reviewer 2 (R2) coded them separately. R1 and R2 then agreed to a common codebook and re-coded all papers for relevant themes.Results: Out of 322 articles identified in PubMed, 16 articles met the inclusion criteria. The articles all acknowledged gaps in current MMRC practice and policies. Recommendations included ensuring representative and diverse committee representation, improving data quality and standardization, and performing in-depth review of cases of maternal death to look for social determinants of health. Several other themes arose regarding funding, support for, and review practices of MMRCs.Conclusion: This is the first study to collect evidence-based recommendations to improve MMRC effectiveness. We offer next steps and best practices to policymakers and MMRCs at a time when reducing maternal mortality rates is a national priority.