Globally, approximately 2.9 million people live with multiple sclerosis (MS). The prevalence of depression and anxiety is significantly higher in people with MS than in the general population, contributing to a lower quality of life (1). A high-quality diet has been shown to have beneficial effects on MS symptoms, including mental health outcomes. Despite emerging evidence on the association between a high-quality diet and mental health outcomes in people with MS, there is a lack of evidence supporting the specific effects of dietary quality on depression and anxiety in MS. Adults with MS gather information from a range of resources to improve their diet and mental health. However, little is known about the development sources and nature of diet-focused resources aimed at improving mental health outcomes in adults with MS. We conducted a scoping review to identify and map the content, accessibility, acceptability, and usefulness of diet-focused resources aimed at improving depression and anxiety in adults with MS. The review was conducted according to the JBI methodology for scoping reviews and the Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) checklist (2). Resources eligible for inclusion could be of any type (e.g., web article, blog, dietary modification program) and in any format (e.g., online, telehealth, in-person). Included resources featured diet, food, or nutrition as a mechanism to improve depression and anxiety in adults with MS. A comprehensive search was conducted to identify published (MEDLINE, CINAHL Ultimate, PsycINFO, Emcare, Scopus, ProQuest Central, Cochrane Database of Systematic Reviews, and Cochrane Central Register of Controlled Trials) and unpublished resources (ProQuest Dissertations and Theses Global, Google Scholar, websites, and organisations). From 949 resources screened (n = 834 articles and other resources retrieved from databases; n = 98 resources retrieved from websites; n = 17 resources retrieved from organisations), 64 were included (n = 42 organisational or web-based resources, e.g., podcast episodes, blog posts, web articles; n = 20 published journal articles; n = 1 mobile application in development; n = 1 book). Resources mentioned an extensive range of dietary and nutritional information (e.g., macronutrients, food groups, micronutrients, MS-specific diets) linked to depression and anxiety for people with MS; however, 6 resources were based solely on lived experience, while other resources involved a combination of input from experts (n = 54), organisations (n = 23), authors or journalists (n = 5), or co-design (n = 1). Furthermore, some resources (n = 20) were only available in certain countries or regions due to recruitment restrictions, making them inaccessible for many people with MS. Developing evidence-based mental health and dietary resources tailored for people with multiple sclerosis will address the current gap in credible, co-designed resources accessible to the multiple sclerosis community.