Marie von Olfers (27 October 1826, Berlin - 8 January 1924, Berlin) was a German writer, illustrator and salonnière. She wrote under the pseudonym M(aria) Werner, Werner Maria. She was also a major artistic influence on her niece Sibylle von Olfers.
She was the second daughter of the museum director Ignaz von Olfers and the writer Hedwig, née von Staegemann.