Suicide rates among children and adolescents have continued to rise over the past decade indicating the need for school-based suicide prevention programs. School nurses (SNs) are well positioned to assist in assessment, early identification, and intervention of at-risk students. This integrative review aimed to (1) critically examine the role of the SN in school-based suicide interventions, (2) explore potential barriers preventing the SN from participating in suicide interventions, and (3) recommend strategies to build capacity for principles of school nursing practice in suicide intervention. The National Association of School Nurses' Framework for 21st Century School Nursing Practice was used to categorize interventions and outcomes related to suicide prevention. Findings demonstrate a lack of reported nursing interventions directly linked to student outcomes and suggest obscurity in the role of the SN. Recommendations for future research and strategies to build capacity for principles of school nursing practice are provided.