Swedish musician and composer, sometimes used the artist name ”Marie Adams”, born 21 April 1924 in Västerås, Sweden, died 30 January 2018 i Avesta, Sweden.

She was classically trained but is also considered Sweden's first female jazz pianist. She was also probably the first in the country to form a jazz piano trio. With it, she already performed in the early 1940s in Stockholm.

Mother of Georg Wadenius (from her first marriage).