Elisabeth Therese of Lorraine (15 October 1711 – 3 July 1741) was born a Princess of Lorraine and was the last queen consort of Charles Emmanuel III of Sardinia. The sister of Francis Stephan, Duke of Lorraine, she died as a result of giving birth to Benedetto of Savoy.

Princess Elisabeth Therese was born at the Château de Lunéville and was the ninth of eleven children of Leopold Joseph of Lorraine and his wife Élisabeth Charlotte d'Orléans. Her mother was a niece of Louis XIV and her father, a son of Eleanor of Austria, Queen of Poland. Her eldest brother became Francis I, Holy Roman Emperor, four years after her death. As a princess of Lorraine she was entitled to the style of Highness as well as the rank of foreign princess in France. During the coronation of the king in October 1722, Elisabeth Therese, her mother, and her sister Anne Charlotte went to the French court. Elisabeth Therese's grandmother found her two granddaughters very charming as well as attractive, though Anne Charlotte was deemed the more beautiful.

In the spring of 1725, the young King Louis XV was fifteen and unmarried. He was engaged to Mariana Victoria of Spain, but the young princess was sent back to Spain because she was too young to conceive. As a result, Élisabeth Charlotte began negotiations to marry her daughter to the king. However, this was met with opposition from the king's prime minister, the Duke of Bourbon, who arranged for the king marry an obscure Polish princess later that year.

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