Charles IV, known as the Fair (18/19 June 1294 – 1 February 1328), was the King of France and of Navarre (as Charles I) and Count of Champagne from 1322 to his death: he was the last French king of the senior Capetian lineage.

Charles IV was the third son of Philip IV; like his father, Charles was known as "the fair" or "the handsome". By virtue of his mother, Joan I of Navarre's, birthright, Charles claimed the title Charles I, King of Navarre. From 1314 to his accession to the throne, he held the title of Count of La Marche, and was crowned King of France in 1322 at the cathedral in Reims. Unlike either Philip IV or Philip V, Charles is usually felt to have been a relatively conservative, "strait laced" king – he was "inclined to forms and stiff-necked in defence of his prerogatives", but disinclined either to manipulate them to his own ends or achieve wider reform.

Charles married his first wife, Blanche of Burgundy, the daughter of Otto IV, Count of Burgundy in 1308, but Blanche was caught up in the Tour de Nesle scandals of 1314 and imprisoned. After Charles assumed the throne he refused to release Blanche, their marriage was annulled and Blanche retreated to a nunnery. His second wife, Marie of Luxembourg, the daughter of Henry VII, the Holy Roman Emperor, died following a premature birth.

France (English ⁱ/ˈfræns/ FRANSS or /ˈfrɑːns/ FRAHNSS; French: [fʁɑ̃s] ( listen)), officially the French Republic (French: République française [ʁepyblik fʁɑ̃sɛz]), is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France extends from the Mediterranean Sea to the English Channel and the North Sea, and from the Rhine to the Atlantic Ocean. It is often referred to as l’Hexagone ("The Hexagon") because of the geometric shape of its territory. It is the largest western European country and it possesses the second-largest exclusive economic zone in the world, covering 11,035,000 km² (4,260,000 sq mi), just behind that of the United States (11,351,000 km² / 4,383,000 sq mi).

Over the past 500 years, France has been a major power with strong cultural, economic, military and political influence in Europe and around the world. During the 17th and 18th centuries, France colonised great parts of North America and Southeast Asia; during the 19th and early 20th centuries, France built the second largest colonial empire of the time, including large portions of North, West and Central Africa, Southeast Asia, and many Caribbean and Pacific Islands.

Charles IV may refer to: