Marie Sophie de Courcillon (6 August 1713 – 4 April 1756) was a French salonnière, Duchess of Rohan-Rohan and Princess of Soubise by marriage.

She was praised for being a cultured woman for the age and held a fashionable salon at the Hôtel de Soubise in Paris.

The bride was 44 years younger than the groom; Marie Sophie was closer to her daughter-in-law the Princess of Guéméné (1704–1780).

To celebrate the union, her husband commissioned Germain Boffrand to redecorate the interior of the Hôtel de Soubise, the Parisian townhouse of the Rohan's.

In 1737,[3] it was she who presented Anne Marie Louise de La Tour d'Auvergne[3] to the court at Versailles.

Anne Marie Louise was wife of Charles de Rohan, Prince of Soubise—grandson of Hercule Mériadec and his heir.