Injury is deadly and expensive, and rates are increasing. The cost of injury is not only a financial burden; individuals, families and communities suffer the human costs of physical and emotional injury. For children and youth in Canada, injuries are the leading cause of death and disability. However, the risk of preventable injury is not equal for all youth. The transforming injury prevention for youth (TrIPY) model aims to recognise and remediate these inequities by applying an intersectionality lens to injury prevention programming. TrIPY conceptualises injury prevention programming through an intersectionality lens. The model was developed with diverse youth in mind, and the intended users include injury prevention practitioners, partners, stakeholders, communities and decision-makers. TrIPY was designed using a transformative perspective and built on core concepts within public health, injury prevention, intersectionality, gender analysis, youth risk, health equity, and systems of privilege and oppression. TrIPY helps to analyse intersecting inequities along multiple dimensions, to improve injury prevention programmes for diverse youth with unique identities, skills and lived experiences. The end goal of implementing an intersectionality model within injury prevention is to find out who is being missed in order to address existing inequities concerning youth injury. No matter what a person’s unique social location or lived experience, they will have the opportunity to be included in prevention programming. Developing injury prevention programmes through an intersectionality lens is needed to better understand the factors that interact to influence an individual’s risk for injury. There is a need to explore the unique experiences of youth at the intersection of various identity factors, including gender, race and ethnicity, and socioeconomic status. With this knowledge, prevention programmes can be more culturally responsive, gender transformative, inclusive, accessible and engaging for diverse groups of youth.