Which Louis was known as 'The Sun King of France'?

Louis XIV is “The Sun King” (Le Roi Soleil). Ruling from 1643–1715, he made the sun—symbol of Apollo—his emblem to project that all power radiated from him. He built and staged power at Versailles, expanded royal authority, and embodied absolute monarchy (the famous “L’État, c’est moi” line, though likely apocryphal). To distinguish the Louises: Louis XIII (his father) ruled with Cardinal Richelieu; Louis XV (his great-grandson) followed with waning prestige; Louis XVI was overthrown and executed in the French Revolution. Memory tip: think “Louis 14 = 14-karat gold” and picture a golden sun—XIV is the gilded, radiant king at Versailles.