Aim: Globally, sustainability and planetary health are emerging as areas of critical importance. In 2015, the 2030 Agenda for Sustainable Development was adopted by the United Nations member states. Since then, the United Nations Educational, Scientific and Cultural Organization and the Commonwealth Secretariat have published guidelines for educators to embed sustainability content into curricula. This scoping review aims to identify how student dietitians learn about sustainability, how learning opportunities are evaluated, their outcomes, and whether these guidelines have translated into teaching activities contained in dietetic degrees. Methods: A scoping review was used to address the aims. Eight electronic databases and Google Scholar were searched from inception to March 2022 for articles describing dietetics students' participation in learning activities focused on sustainability. Data that addressed the research aims were charted independently by two researchers, then narratively synthesised. Results: Twelve articles met the inclusion criteria. A range of teaching approaches and evaluation methods were used, from passive learning in lectures to experiential learning activities. A change in knowledge or behaviour was found for experiential learning activities (n = 5). For articles published after 2015 (n = 9), two mentioned the Sustainable Development Goals and no articles referenced the published guidelines. Conclusions: A paucity of evidence exists describing how dietetics students learn about sustainability and their learning outcomes. Of the 12 articles published, varied teaching approaches and evaluation methods have resulted in inconsistencies in the reporting of outcomes. The minimal reference to the Sustainable Development Goals and published guidelines suggests a slow translation of knowledge to practice.