Barbara Margaretha "Meta" von Salis (3 January 1855 – 15 March 1929) was a Swiss feminist and historian, as well as a regular correspondent of Friedrich Nietzsche.

After leaving school, she worked as a governess for numerous wealthy families in Germany, England and Ireland before enrolling at the University of Zurich in 1883 to study history and philosophy.

[3] Despite Nietzsche's disregard for feminists and the women's movement, their encounter "cast a 'golden shimmer' over the rest of her life", and they formed a long-lasting friendship.

[3] Despite this, it was von Salis who purchased the Villa Silberblick in Weimar, where Nietzsche and his sister lived for the final years of his life before it became the permanent home of the Nietzsche-Archiv collection.

Following Kym's marriage to Ernst Feigenwinter, von Salis continued to live with the couple in their Basel home from 1910 until her death in 1929.