Marianne Alopaeus (9 October 1918 – 10 November 2014) was a Finnish-born writer who published in Swedish.

[3] Mörkrets kärna ("The Dark Core") is her best known work and it deals with a woman who rejects the priorities of her children to concentrate on intellectual pursuits.

The work is thought to be influenced by the style and approach of the existentialist Simone de Beauvoir.

Ten years later, she wrote Drabbad av Sverige which deals with what it is to be Swedish.

Only a week before her death, she was moved back to Finland, and she died in Helsinki in November 2014.