Louise Adélaïde de Bourbon (1696–1750)

Louise Adélaïde de Bourbon, Mademoiselle de Blois, was a French princess of the blood, a member of the House of Bourbon. She was the third daughter of Louis Armand I, Prince de Conti, and Marie Anne de Bourbon, the eldest legitimised daughter of King Louis XIV of France and his mistress, Louise de La Vallière.

Born at the Hôtel de Conti in Paris, she was styled Mademoiselle de La Roche-sur-Yon prior to her marriage. Although a member of the reigning House of Bourbon, she was not a Daughter of France as her father was only a Prince of the Blood.

In 1713, she married Louis Armand II, Prince de Conti, her first cousin. The marriage produced no surviving children. Her husband succeeded his father as Prince de Conti in 1727. After his death in 1727, Louise Adélaïde never remarried and became known as the Dowager Princess de Conti.

Louise Adélaïde was known for her piety and devotion to religious causes. She was a patron of the arts and sciences, but lived a quiet life compared to other members of the court. She died in Paris in 1750 and was buried at the Val-de-Grâce convent.