Protein is essential in the diet for building and maintaining body cells, and for making hormones and enzymes that regulate metabolic processes. Protein can also be used by the body for energy. The 2015-2020 Dietary Guidelines for Americans (DGA) recommend consuming a variety of protein foods. Such foods include meat and poultry, seafood, dairy products, legumes, nuts and seeds, and soy products. This report describes protein intake of adults in the U.S. using nationally representative dietary intake data from What We Eat in America, NHANES 2015-2016.