Mentona Moser (19 October 1874–10 April 1971) was a Swiss social worker, communist functionary, and writer.
Though born of wealth, Moser became convinced based on her family history that the idle social life led by nobles was unhealthy.
After studying in London and being involved in the settlement movement, Moser returned to Switzerland and founded an Association for the Blind, a service to help tubercular patients, a women's school to teach social work practices and helped the city of Zürich found workers' cooperatives.
When her mother, cut off the stipends from her inheritance, Moser helped found the Swiss Communist Party and began working at Pro Juventute as a manager of maternal and infant care.
She was a suffragist and established one of the first birth control clinics in Zürich.
After coming in to her inheritance in 1925, Moser worked to establish an international children's home in Russia.
She moved to Berlin and participated in communist opposition to both the National Socialist Party and fascism.
When Hitler rose to power, her remaining inheritance was confiscated and she fled back to Switzerland where she worked until the end of World War II as a writer.
In 1950, she was invited to become an honorary citizen of the German Democratic Republic because of her dedication to communism and development of social programs.
She was awarded both the Clara Zetkin Medal and the Patriotic Order of Merit by East Germany.