Louise Diane d'Orléans (27 June 1716 – 26 September 1736) was the sixth daughter and last child of Philippe d'Orléans, Duke of Orléans (Regent of the Kingdom from 1715 to 1723) and his wife, Françoise Marie de Bourbon, the youngest legitimised daughter of King Louis XIV of France and his mistress, Madame de Montespan.
She was born during the Regency of Philippe d'Orléans, the Regent of Louis XV of France.
The Princess of Conti by marriage, she died in childbirth at the age of twenty.