Maria Karoliina Ohisalo (born 8 March 1985) is a Finnish politician and researcher who served as Minister of the Interior between 2019 and 2021.

[4] Ohisalo served as the Green League's interim chairman after Touko Aalto stepped down in September 2018.

She lived her childhood in poverty in the suburbs of Helsinki, as her parents were often unemployed, and she spent one year in a shelter.

[8] Ohisalo graduated from the Mäkelänrinne Sports High School in 2004 and received a master's degree in social science from the University of Helsinki in 2011.

[9][10] In 2017, Ohisalo defended her doctorate in sociology at the University of Eastern Finland's Department of Social Sciences.

[16] Ohisalo was chairman of the International Affairs Working Group of the Federation of Green Youth and Students in 2011.

[9] In 2012, Ohisalo was chairman of the Youth Working Group on the Future of Nordic Cooperation in the Ministry of Foreign Affairs.

[29] On 18 September 2018, she was appointed as the official vice chairman of the Greens while Touko Aalto was on sick leave.

[31][32] In June 2019, the Greens decided to present Ohisalo as their choice for the post of minister of the interior in the Antti Rinne cabinet.