Food security is highly instrumental to the economic growth and sustainability of any country. Unfortunately, food insecurity has had an adverse effect on people in developing countries of the world, especially in continents of Asia and Africa, most importantly Nigeria. In the midst of food insecurity ravaging these countries, the field of Food Science and Technology has vital roles to play in ameliorating the situation. The Food Scientist, who has obtained sound training in this field, can thus help proffer solutions, making use of technologies that could foster food security in developing countries. While the Food Scientist has important functions to perform in achieving and sustaining food security, it is evident that efforts of other stakeholders are required to ensure success of the exercise. It is important to note that efforts of the Food Scientist could be impaired in the absence of enabling environment and necessary incentives from the government. As in the developed countries, collaborations between the Food Scientist and other professionals alike are also fundamental towards realising the objectives of food security in developing countries particularly Nigeria. In the present review, certain professional inputs by the Food Scientist towards achieving food security are examined.