John B is a common name that can refer to various individuals, but one notable figure is John B. Watson, an American psychologist known for founding the school of behaviorism. He emphasized the importance of observable behavior over internal mental states, influencing psychology significantly in the early 20th century. Another reference could be to John B. Stetson, an American hat manufacturer famous for creating the iconic cowboy hat. His designs became synonymous with the American West and are still popular today, symbolizing rugged individualism and adventure.