Maria Cornelia Gezina "Mona" Keijzer (born 9 October 1968) is a Dutch politician and former civil servant who is the minister of housing and spatial planning in the Schoof cabinet since 2024.

[1] A member of the Farmer–Citizen Movement (BoerBurgerBeweging, BBB), she won a seat in the House of Representatives in the 2023 Dutch general election.

Formerly a member of the Christian Democratic Appeal (CDA), she served in the third Rutte cabinet as State Secretary for Economic Affairs and Climate Policy alongside Dilan Yesilgöz-Zegerius from 26 October 2017 until 25 September 2021.

Placed second on the list of candidates, Keijzer was elected to the House of Representatives, receiving 127,446 votes, and she served as her party's spokesperson for curative care, asylum, and integration.

On 26 October 2017, Keijzer was appointed State Secretary for Economic Affairs and Climate Policy in the third Rutte cabinet.

The last time a cabinet member was fired was in 1975, although in that instance Jan Glastra van Loon was allowed to resign.

Criminal complaints were subsequently filed against her for group defamation, but the Public Prosecution Service decided in July not to bring charges.

[15] It stated that her statements were illegal and constituted group insult, but it argued that they had been made by a politician as part of political discourse on migration.

[4][17] She was tasked with overseeing the construction of 100,000 homes per year in response to a housing shortage, the same target set for her predecessor.

The agreement reaffirmed the requirement of Keijzer's predecessor that two thirds of new construction should be affordable, despite opposition from the private sector.