Louis XIV, also known as the Sun King, was King of France from 14 May 1643 until his death in 1715. His reign of 72 years and 110 days is the longest recorded of any monarch of a sovereign country in history.

Louis began his personal rule of France in 1661, after the death of his chief minister, the Cardinal Mazarin. An adherent of the concept of the divine right of kings, Louis continued his predecessors' work of creating a centralised state governed from the capital. He sought to eliminate the remnants of feudalism persisting in parts of France; by compelling many members of the nobility to inhabit his lavish Palace of Versailles, he succeeded in pacifying the aristocracy, many members of which had participated in the Fronde rebellion during his minority. By these means he became one of the most powerful French monarchs and consolidated a system of absolute monarchy in France that endured until the French Revolution. He also enforced uniformity of religion under the Gallican Catholic Church. His revocation of the Edict of Nantes abolished the rights of the Huguenot Protestant minority and subjected them to a wave of dragonnades, effectively forcing Huguenots to emigrate or convert, as well as virtually destroying the French Protestant community.

During Louis's long reign, France emerged as the leading European power and regularly asserted its military strength. A conflict with Spain marked his entire childhood, while during his reign, the kingdom took part in three major continental conflicts, each against powerful foreign alliances: the Franco-Dutch War, the War of the League of Augsburg, and the War of the Spanish Succession. In addition, France also contested shorter wars, such as the War of Devolution and the War of the Reunions. Warfare defined Louis's foreign policy and his personality shaped his approach. Impelled by "a mix of commerce, revenge, and pique", he sensed that war was the ideal way to enhance his glory. In peacetime, he concentrated on preparing for the next war. He taught his diplomats that their job was to create tactical and strategic advantages for the French military. Upon his death in 1715, Louis XIV left his great-grandson and successor, Louis XV, a powerful kingdom, albeit in major debt after the 13-year-long War of Spanish succession.