Food security is a problem in many developing and less developed countries due to increase in human population and decrease in crop productivity and food availability. Edible insects are a natural renewable resource of food providing carbohydrates, proteins, fats, minerals and vitamins. As such, entomophagy is common in ethnic groups in South America, Mexico, Africa and Asia, where indigenous insects are easily available and are consumed in various forms (raw/processed) or used as an ingredient or supplement in modern recipes. Entomophagy therefore offers an opportunity to bridge the protein gap of human foods irrespective of a few constraints that are discussed. Concerning food security, more attention is needed to assess and revalidate entomophagy in the context of modern life. Further research would be necessary to exploit insect biodiversity and ethno-entomophagy, stop overexploitation of these insects, and initiate actions for insect conservation.