Post-harvest loss is the amount of food lost along the whole food supply chain, from crop harvesting to consumer consumption. Weight loss from spoiling, nutritional loss, seed viability loss, quality loss, and commercial loss are the main categories of losses. While meeting the world’s growing food demand is still a major challenge, post-harvest technology is essential for maintaining the amount and quality of agricultural output after harvest, assuring food security, lowering losses, and improving sustainability. In order to reduce post-harvest losses, increase shelf life, preserve nutritional value, and add value to agricultural goods, it includes a variety of advanced procedures for harvesting, packaging, rapid chilling, refrigerated sealed storage, controlled transportation, and modified and regulated atmospheres are all included in post-harvest technology. Remarkably, the rate of waste can reach 40–50% in certain underdeveloped nations with tropical climates and inadequate infrastructure. Even as the world’s largest producer of agricultural products, India has a significant problem with food waste, which is mostly caused by inadequate infrastructure and post-harvest management. Improving farmer livelihoods, boosting food supply, relieving the strain on natural resources, and eradicating hunger may all be achieved via reducing post-harvest losses, particularly in developing nations.