Please use this link to access this publication. Abstract Adolescent and young adult (AYA) cancer survivors face increased risks of long-term health complications, compounded by engagement in risky health behaviors such as smoking or vaping nicotine or cannabis products (e.g., inhaled substance use). This scoping review explores the existing literature on inhaled substance use among AYA cancer survivors to better understand the prevalence, methods, and contributing factors driving these behaviors. While combustible cigarette smoking is decreasing, vaping remains prevalent, and both are associated with inhaled cannabis co-use. Mental health challenges experienced by AYA survivors, such as depression and anxiety, may drive increased substance use...