Leo is a strong and popular boys name of Latin origin, meaning lion. It is a short, impactful name that has been a favorite for centuries, associated with strength, courage, and leadership. The name has been borne by numerous popes and saints, giving it a venerable history. Leo is widely popular around the world, consistently ranking high in the United States, the UK, France, Germany, and many other European and South American countries. Famous individuals include actor Leonardo DiCaprio (Leo is often a nickname) and Leo Tolstoy (author).