Marie Adelaide
Marie Adelaide may refer to:
- Marie-Adélaïde, Grand Duchess of Luxembourg, reigned 1912–1919
- Princess Marie Adélaïde of Savoy, Duchess of Burgundy and Dauphine of France
- Princess Marie Adélaïde of France, daughter of King Louis XV
- Louise Marie Adélaïde de Bourbon, Duchess of Orléans, and mother of King Louis Phillipe I
- Princess Marie Adelaide of Luxembourg
- Princess Adélaïde of Orléans, one of the twin daughters of King Louis Philippe