Marg Moll (born Margarethe Haeffner; 2 August 1884 – 15 March 1977) was a German sculptor, painter and author.

She attended the Stadelsches Institut in Frankfurt am Main from 1903 to 1905 and studied under painter Hans Volker in Wiesbaden.

[1] Margarethe married Oskar Moll and became known as the "Director's Wife" due to her husband's position.

When she began to work with Matisse, she concentrated more heavily on sculpture, perfecting her technique and using all sorts of sculpting materials.

Though her family hid from the Nazis during the war, the Molls built a house in Berlin in 1943 designed by the German architect Hans Scharoun.

Moll once took an Eheferien, German for a vacation from marriage and went to Paris to finish some of her works in 1928, as stated in her autobiographical notes.

One of her sculptures, The Dancer was found in ruins during excavation for a new train station in Berlin, along with ten other works.

She traveled to the United States where she was recognized as an artist who had promoted the importance of modern art in Germany and throughout the world.