Nutrition Policy Institute's Lorrene Ritchie and Wendi Gosliner, in collaboration with Gurpinder Singh Lalli of the University of Wolverhampton, are guest editors of a Special Issue on “Improving School Nutrition: Innovations for the 21st Century” in the International Journal of Environmental Research and Public Health (IJERPH). As guest editors, they are soliciting manuscript submissions for the Special Issue, which focuses on 21st-century global innovations in school nutrition to overcome challenges and improve the diet, food security, and ultimately the health and wellbeing of school-aged children. Topics of interest are organized in four overarching themes: (1) Food Security, Meal Participation, and Investments in School Food, (2) Nutrition in School Meals, (3) Environmental Sustainability, and (4) Food Literacy and Nutrition Education in Schools. In addition, manuscripts will be considered that cover cross-country comparisons of school nutrition models and outcomes; research on school nutrition from underrepresented regions; and recent lessons learned from adaptations due to the COVID-19 pandemic. Manuscript types accepted include new research papers involving interventions, secondary data analyses, or qualitative data analyses, reviews, position papers, brief reports, and commentaries. The deadline for manuscript submissions is December 31, 2021. Information on the special issue and submission is available online.