The proportion of infants in the United States who are breastfed at 1 year remains well below the Healthy People 2030 target. The health implications of suboptimal breastfeeding durations are significant, including increased risk of childhood leukemia and maternal Type 2 diabetes. Prenatal breastfeeding education provides an opportunity to improve breastfeeding self-efficacy among pregnant individuals and to establish their coping skills in case future breastfeeding problems arise. Although prenatal breastfeeding education is known to improve breastfeeding self-efficacy, characteristics of prenatal breastfeeding education interventions that are successful at increasing breastfeeding duration have not been well defined. Using Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines and the Health Action Process Approach, we conducted a systematic review of the literature examining the impact of prenatal breastfeeding education interventions on breastfeeding duration measured at least 12 weeks postpartum. Twenty-one studies were identified. Prenatal breastfeeding education was most likely to increase breastfeeding duration when education interventions integrated psychological components (Health Action Process Approach coping planning) or were paired with in-person postpartum breastfeeding support. Additional research is needed to examine the role of psychological components in breastfeeding education interventions in diverse populations and to determine the specific psychological intervention components with the greatest impact on breastfeeding duration.