Princess Maria Czartoryska (formerly Duchess Louis of Württemberg; 15 March 1768, Warsaw – 21 October 1854, Paris), was a Polish noble, member of the House of Württemberg, writer, musician and philanthropist.

Maria's only son, Duke Adam of Württemberg, remained with his father and was raised in an atmosphere prejudiced against his mother and Poland.

Following her divorce, Maria lived mostly in Warsaw, and from 1798 to 1804 spent winters in Vienna and summers at Puławy.

Charmed with the picturesque village of Pilica she bought it and remodelled its landscape garden.

In 1837 she moved to Paris, where she lived with her brother, Prince Adam Jerzy Czartoryski.