Henry IV (13 December 1553 – 14 May 1610) is King of France from 1589 to 1610 and King of Navarre from 1572 to 1610.

He is the first monarch of the Bourbon branch of the Capetian dynasty in France.

His parents were Queen Jeanne III and King Antoine of Navarre.

As a Huguenot, Henry had been involved in the Wars of Religion before ascending the throne in 1589.

Before his coronation as king of France at Chartres, he changes his faith from Calvinism to Catholicism and, in 1598, he enactsthe Edict of Nantes, which guarantees religious liberties to the Protestants and thereby effectively ends the civil war.

One of the most popular French kings, both during and after his reign, Henry shows great care for the welfare of his subjects and displays an unusual religious tolerance for the time.

He is assassinated by a fanatical Catholic, François Ravaillac.

Henry is nicknamed Henry the Great (Henri le Grand), and in France is also called le bon roi Henri ("the good king Henry") or le Vert galant ("the Green gallant"), a reference to both his dashing character and his attractiveness to women.

In English he is most often referred to as Henry of Navarre.

He also gave his name to the Henry IV style of architecture, which he patronized.

He is the eponymous subject of the royal anthem of France, "Marche Henri IV".