Louise de La Vallière (Françoise Louise de La Baume Le Blanc; 6 August 1644 – 7 June 1710) was a mistress of Louis XIV of France from 1661 to 1667. She later became the Duchess of La Vallière and Duchess of Vaujours in her own right. Unlike her rival, Madame de Montespan, she has no surviving descendants.
Louise de La Vallière was born in Tours, the daughter of an officer, Laurent de La Baume Le Blanc (who took the name of La Vallière from a small estate near Amboise) and Françoise Le Provost. Laurent de La Vallière died in 1651; his widow remarried in 1655, to Jacques de Courtarvel, marquis de Saint-Rémy, and joined the court of Gaston, Duke of Orléans, at Blois.
Louise was brought up with the younger princesses (the future Grand Duchess of Tuscany, Duchess of Alençon, and Duchess of Savoy), the stepsisters of La Grande Mademoiselle. After the death of Gaston, Duke of Orléans, his widow moved with her daughters to the Luxembourg Palace in Paris and took the sixteen-year-old Louise with them.