With the increasing demand for alternative protein sources for food and feed due to a growing global population and changing food habits, insects and insect proteins have attracted attention in Europe as a hitherto unexploited alternative animal protein source for food and feed. The nutrient compositions, amino acid spectra, and mineral compositions of the three exemplary insect species Achetadomesticus (adult house crickets), Tenebriomolitor (mealworm larvae), and Hermetiaillucens (black soldier fly larvae) are compared with the two conventional feed components soy bean meal and fish meal as well as with the human amino acid requirement, and the potential and suitability of edible insects as food and feed is discussed.