Food security refers to a condition in which all individuals, at all times, have physical, social, and economic access to sufficient, safe, and nutritious food that meets their dietary needs and food preferences for an active and healthy life. It encompasses more than just the availability of food; it includes accessibility, affordability, stability, and the utilization of food in ways that promote health and well-being. The concept is closely tied to sustainable development and the functioning of smart cities, where ensuring equitable access to resources and efficient management of food systems becomes a vital part of achieving resilience and inclusivity. Food security is not simply about producing enough food globally; it is also about ensuring that food reaches those who need it, that it is affordable, culturally acceptable, and environmentally sustainable. The first dimension of food security is availability, which refers to the physical presence of sufficient quantities of food of appropriate quality, supplied through domestic production or imports. It emphasizes the supply side of food systems, requiring robust agricultural productivity, sustainable land use, water management, and efficient distribution networks. In the context of smart cities, availability can be enhanced through urban agriculture, rooftop farming, vertical farming, and the use of technology such as precision agriculture. These practices can reduce dependency on distant rural supply chains and contribute to localized resilience. Availability also depends on proper infrastructure, such as storage facilities, cold chains, and transportation systems, which prevent post-harvest losses and maintain food quality. The second dimension is access, which is divided into economic and physical access. Economic access highlights the ability of households and individuals to afford adequate food without compromising other essential needs such as health, education, or housing. Physical access refers to the presence of food markets, retail outlets, and distribution networks that allow people to obtain food conveniently. In urban areas, especially in rapidly growing cities, disparities in access can create pockets of “food deserts,” where communities have limited availability of affordable and nutritious food. Smart city initiatives seek to overcome these challenges by integrating digital platforms for food distribution, enhancing market connectivity, and promoting equitable policies that ensure food is accessible to marginalized populations. Additionally, improving public transportation and urban planning can help address barriers to physical access. The third dimension is utilization, which goes beyond consumption and relates to the proper biological use of food, requiring a diet that provides adequate energy and essential nutrients, as well as clean water, sanitation, and healthcare. Utilization emphasizes that food security is not achieved merely when people consume calories, but when they consume balanced diets that support healthy living. Malnutrition, both undernutrition and obesity, reflects the importance of this dimension. Urban poverty, unhealthy dietary practices, and limited knowledge about nutrition can contribute to poor utilization even when food is available and accessible. Smart city strategies can address utilization through health education programs, school feeding schemes, integration of nutrition-sensitive policies, and the use of