Marit Johanne Aarum (1903–1956) was a Norwegian economist, liberal politician, civil servant and feminist.

Aarum was an inspector at the Norwegian Labour Inspection Authority and served as a representative of the Norwegian government to the international Labour conference in 1948.

She worked as an International Labour Organization expert in Pakistan for six months from 1952 to 1953.

[2][3] Aarum became the vice president of the Norwegian Association for Women's Rights in 1952.

She was a deputy member of the Norwegian Parliament representing Oslo for the Liberal Party from 1954 until her death.