Purpose: This article describes steps taken by a mental health inpatient multidisciplinary team to develop a clinical pathway for the assessment and management of suicidality in a pediatric psychiatric inpatient unit. Patients and Methods: The setting for this project is a 19-bed inpatient psychiatry unit providing care for children and adolescents (6-17 years of age) in a tertiary care pediatric hospital in Ontario, Canada. Three Lean methodologies were used: 1) The A3 process was used to articulate a problem statement and help clarify expectations, determine goals, and uncover, address and encourage discussion of potential issues; 2) Process mapping was used to show how work process activities are sequenced from the time of the patient's admission to discharge; and 3) Standard work, where consideration was given to the breakdown of the work into categories which are sequenced, organized and repeatedly followed. Generally accepted methodologies for developing clinical pathways were used to create a framework and algorithm for the assessment and management of suicidality in psychiatrically hospitalized children and adolescents. Results: The clinical pathway development resulted in six steps from admission to discharge: intake process, inclusion/exclusion criteria, data integration and treatment formulation, interventions, determination of readiness for discharge, and the discharge process. Conclusion: This framework, developed with the aim to standardize care for psychiatrically admitted suicidal children and adolescents, may serve as a flexible template for use in similar settings and could be adapted according to local realities and resources.