Nanotechnology being the recent greatest application in the world of science has extended its utility in food science and agriculture. Nano-science deals with substances and materials of Nano-meter size (10–9 m). Nanotechnology as offered many new innovative solutions in health industry including cancer treatment, drug delivery in a targeted fashion. Nano-materials and Nano capsules have been used in the agricultural farms in pest control and nutrient delivery. Nano-science in food technology as diverse utility from production to packaging. It is used as additives for colour and flavour enhancer. Sometimes this particle increases the bioavailability and improves the nutritional value of the food product. Nano techniques are mostly used in food safety and preservation. Active and smart packaging using Nano sensors and nanomaterial in food packages provide immense use in food safety aspect. Properties of different kinds of nanomaterial from various source is studied in this chapter. Consumer acceptance being an important criterion in food industry is also analysed along with regulations formed.