Of all age groups, adolescents consume the unhealthiest diets. Poor dietary behaviours during adolescence are a risk factor for the development of preventable chronic diseases such as type 2 diabetes, cardiovascular disease and some cancers (1). Digital sources are a popular and widely accessed medium by adolescents. Understanding the role and influence of digital sources on adolescents’ nutrition knowledge and behaviours provides an opportunity for the development of innovative and relevant public health interventions to promote nutrition and healthy eating in adolescents. This scoping review aimed to map the literature to identify and evaluate the digital sources of healthy eating knowledge that influence the dietary choices of adolescents aged 12-18 years. The study was conducted in accordance with the JBI methodology for scoping reviews and in line with the PRISMA-ScR checklist. Six databases including Medline (PubMed), CINAHL, Global Health, Embase, Scopus, and CENTRAL were systematically searched. Studies published from 2010 onwards and available in the English language were considered for inclusion. Numerical data was tabulated and summarised with descriptive statistics. Findings were synthesised as a narrative summary. A total of 36 studies met the reviews inclusion criteria. Positive behaviour change was reported in 58% (n=21) of studies, while, only 13 studies explicitly reported positive changes in nutrition knowledge. Though it may be reasonable to assume that changes in healthy eating behaviours are accompanied by the acquisition of nutrition, out of the 21 studies that reported positive changes in healthy eating behaviour, only 12 assessed changes in health eating knowledge. The included papers involved a variety of different digital environments and technologies including downloadable applications, social media platforms, telehealth, web-based programs, gamification, artificial intelligence and broadcasts. Of the studies which employed social media platforms, most (6/8) reported positive changes in dietary knowledge and behaviours of participants. The most successful social media based interventions incorporated multiple social media platforms such as TikTok, Instagram, Facebook, and/or YouTube. All three of the studies which used telehealth and/or online education reported improvements in both nutrition knowledge and behaviour. Both studies which utilised artificial intelligence chatbots reported positive changes in healthy eating behaviours amongst participants. Accessibility, followed by personalisation and user engagement were reported to be the most common features associated with effective digital sources which influenced adolescents’ dietary choices. Overall, this review found that males, clinical populations and culturally and linguistically diverse groups were under-represented in studies investigating digital sources of nutrition knowledge in adolescents. This review demonstrates the potential for digital sources to provide an innovative solution for public health nutrition interventions designed for adolescents. Digital interventions that incorporate features acceptable to adolescents are key to the development of effective public health nutrition interventions for this population.