Dorothea Margrethe Schjoldager (19 September 1853 – 30 September 1938) was a Norwegian teacher, social worker and proponent for women's rights. She was born in Tromsø, and was sister-in-law of Hans Aanrud. She worked as a schoolteacher in Christiania from 1875 to 1923. She engaged in social work among alcoholics, prostitutes, prisoners and children in public care, and was a board member of Kristiania vergeråd from 1900 to 1927. She initiated establishing of the first homes for unmarried mothers in Kristiania, from 1901. She contributed to the public debate, and argued in favour of female priests, as well as for women as police and prison workers.