Prince Ferdinand Philippe of Orléans (3 September 1810 – 13 July 1842) was the eldest son of Louis Philippe d'Orléans, Duke of Orléans and future King Louis Philippe I. Born in exile in his mother's native Sicily, he was heir to the House of Orléans from birth. Following his father's succession as King of the French in 1830, he became the Prince Royal and subsequently Duke of Orléans (French: Duc d'Orléans), the title by which he is best known. He died in 1842, never to succeed his father or see the collapse of the July Monarchy and subsequent exile of his family to England.

Born in Palermo in September 1810, during his parents' exile, he was given the title Duke of Chartres (and was called Chartres within the family circle). He was baptised Ferdinand Philippe Louis Charles Henri and known as Ferdinand Philippe in honour of his grandfathers, Ferdinand I of the Two Sicilies and Philippe Égalité. Despite having been born in exile, he held the rank of prince of the blood and was styled "Serene Highness". As the eldest son, he was the heir to the title of Duke of Orléans, head of the House of Orléans (a cadet branch of the Bourbons of France descended from the only brother of Louis XIV).

The young prince first visited France in 1814 during the First Restoration, settling there more permanently in 1817. In 1819 his father put him in the care of a tutor, M. de Boismilon, at the Collège Henri-IV. Louis Philippe wished his son to receive a liberal education on a foundation of complete equality with his fellow students. Ferdinand Philippe was highly successful in his studies and took courses at the École polytechnique. After a trip to Great Britain (visiting both England and Scotland) in 1819, he went to Lunéville to join the 1^er régiment de hussards, of which he was made colonel by Charles X in 1824. In September 1824, King Charles X granted him the style "Royal Highness", a style maintained by Ferdinand Philippe at his father's accession to the throne six years later.

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