The purpose of this study was to survey nurses' knowledge of breastfeeding and to assess whether nurses' education, clinical experience, or personal experience predicted their breastfeeding knowledge. Results suggest that nurses have limited knowledge of breastfeeding, although no variable consistently predicted breastfeeding knowledge. Clinical experience produced the most consistent results, implying that leadership, variety in maternal and newborn nursing experiences, and years of experience result in nurses having more knowledge about breastfeeding.