Maria Wilhelmina Hendrika "Mietje" Hoitsema (1847–1934) was a Dutch feminist.

[1] She was the daughter of the theologian Synco Hoitsema (1799–1860) and Rika van Bolhuis (1808–1895) and married the doctor Johannes Rutgers (1850–1924) in 1885.

[2] In 1894 Mietje Hoitsema became chairperson of the local Rotterdam branch of the Dutch women suffrage union (Vereeniging voor Vrouwenkiesrecht).

She was also a member of the Malthusian League, which fought for the rights for sex education and birth control.

[3] Hoitsema joined the Sociaal Democratische Arbeiders Partij (SDAP) (Social Democratic Workers' Party) at the turn of the century.