Diederik Boomsma

Diederik Thomas Boomsma (born 22 June 1978) is a Dutch politician. He was a member of the House of Representatives for New Social Contract (NSC) between 4 July 2024 and 21 August 2025.^[1] He succeeded Judith Uitermark, who had been appointed interior minister in the Schoof cabinet two days earlier, and his portfolio includes migration, human trafficking, prostitution, spatial planning, nature, and fisheries.^[2][3]

Diederik Boomsma
Member of the House of Representatives
In office 4 July 2024 – 21 August 2025
Preceded by	Judith Uitermark
Member of the Amsterdam Municipal Council
In office 10 November 2016 – 11 October 2023
Personal details
Born	Diederik Thomas Boomsma (1978-06-22) 22 June 1978 (age 47) Leiderdorp, Netherlands
Political party	JA21 (since 2025)
Other political affiliations	CDA (until 2023) NSC (2023–2025)
Alma mater	Durham University University College London

Boomsma attended Stedelijk Gymnasium Leiden before studying at Durham University and University College London.^[4] He was a member of the Amsterdam Municipal Council for the Christian Democratic Appeal from November 2016 until October 2023.^[1][5][6] In 2022, he was voted "best councillor in the Netherlands".^[7]

House committees

• Committee for Foreign Trade and Development
• Contact group France
• Committee for Asylum and Migration
• Committee for Agriculture, Fisheries, Food Security and Nature
• Committee for Housing and Spatial Planning^[8]

Electoral history

Electoral history of Diederik Boomsma

Year	Body	Party		Pos.	Votes	Result		Ref.
						Party seats	Individual
2022	Amsterdam Municipal Council		Christian Democratic Appeal	1	5,620	1	Won	[9]
2023	House of Representatives		New Social Contract	21	1,316	20	Lost[a]	[10]
2025	House of Representatives		JA21	6

Notes

1. Boomsma was appointed to the body later during the term due to a vacancy.