Food additives are any of the natural or many chemicals that are added to foods in order to generate certain desired effects viz., improves quality of the food, colour and stability, enhance flavor and safety aspects. Since the ancient days food products have been preserved and made more appetizing with the help of additives like, salt, spices and sulfites. Food additives needed to be used more frequently and new kinds of additives had to be created as a result of increased food processing. Without the food additives, many contemporary items including low calories foods, snacks and RTE foods would not be viable. This chapter deals with different types of food additives based on their function in the food stuffs.