As the effects of cancer and its treatment have long-lasting negative impacts on the health and quality of life of survivors, there is a need to explore new avenues to optimize long-term patient outcomes in pediatric oncology. Therefore, this scoping review aims to report on the state of the evidence on the use and effects of behavioural interventions targeting physical activity and diet behaviours in pediatric oncology. Fourteen quantitative studies were included. Studies evaluated a combination of two or three different modalities, including education (n=11), physical activity (n=6), psychosocial support or training (n=6), reward system (n=2) and adventure-based activities (n=1). Overall, behavioural interventions in pediatric oncology appear beneficial; however, no conclusive evidence favouring specific interventions were identified.