3D printing technology plays a crucial role in safeguarding food security by enabling the development of portable, accurate, and low-cost sensors for food safety and quality monitoring. As population growth, low agricultural investment, and poor distribution systems threaten food security, 3D printed sensors offer a solution to detect foodborne pathogens, toxins, and allergens efficiently. These sensors are cost-effective, easy to produce, and can be integrated into various food sectors, including agriculture, food processing, and water security. They are particularly useful in vulnerable areas where traditional testing methods are not viable due to lack of resources or accessibility. 3D printed sensors can detect food spoilage, monitor soil nutrients, and track plant health, contributing to sustainable agriculture. They are also used in food packaging to indicate freshness and prevent contamination. In addition, 3D printing allows for the creation of soft grippers and robots for food handling, improving efficiency and reducing damage to delicate products. The integration of 3D printed sensors with the Internet of Things (IoT) enhances their capabilities for real-time monitoring and data transmission. The paper discusses various 3D printing techniques, such as extrusion deposition and photopolymerization, which enable the fabrication of sensors with high precision and reproducibility. These technologies are also used to develop flexible and non-invasive sensors for detecting harmful substances in water and food. The use of 3D printing in agriculture includes soil moisture monitoring, nutrient detection, and plant health assessment, which are essential for maintaining food security. The advantages of 3D printing in food security include cost-effectiveness, accuracy, accessibility, and reproducibility compared to traditional methods. The paper highlights the potential of 3D printed sensors in ensuring food safety, monitoring food quality, and improving agricultural practices. As 3D printing technology continues to evolve, it offers promising solutions for addressing the challenges of food security in a sustainable and efficient manner.3D printing technology plays a crucial role in safeguarding food security by enabling the development of portable, accurate, and low-cost sensors for food safety and quality monitoring. As population growth, low agricultural investment, and poor distribution systems threaten food security, 3D printed sensors offer a solution to detect foodborne pathogens, toxins, and allergens efficiently. These sensors are cost-effective, easy to produce, and can be integrated into various food sectors, including agriculture, food processing, and water security. They are particularly useful in vulnerable areas where traditional testing methods are not viable due to lack of resources or accessibility. 3D printed sensors can detect food spoilage, monitor soil nutrients, and track plant health, contributing to sustainable agriculture. They are also used in food packaging to indicate freshness and prevent contamination. In addition, 3D printing allows for the creation of soft grippers and robots for food handling, improving efficiency and reducing damage to delicate products. The integration of 3D printed sensors with the Internet of Things (IoT) enhances their capabilities for real-time monitoring and data transmission. The paper discusses various 3D printing techniques, such as extrusion deposition and photopolymerization, which enable the fabrication of sensors with high precision and reproducibility. These technologies are also used to develop flexible and non-invasive sensors for detecting harmful substances in water and food. The use of 3D printing in agriculture includes soil moisture monitoring, nutrient detection, and plant health assessment, which are essential for maintaining food security. The advantages of 3D printing in food security include cost-effectiveness, accuracy, accessibility, and reproducibility compared to traditional methods. The paper highlights the potential of 3D printed sensors in ensuring food safety, monitoring food quality, and improving agricultural practices. As 3D printing technology continues to evolve, it offers promising solutions for addressing the challenges of food security in a sustainable and efficient manner.