Diederik Boomsma

Diederik Boomsma
Member of the House of Representatives
Assumed office
12 November 2025
In office
4 July 2024 – 21 August 2025
Preceded byJudith Uitermark
Succeeded byEddy van Hijum
Member of the Amsterdam Municipal Council
In office
10 November 2016 – 11 October 2023
Personal details
BornDiederik Thomas Boomsma
(1978-06-22) 22 June 1978
PartyJA21 (since 2025)
Other political
affiliations
CDA (2010–2023)
NSC (2023–2025)
Alma mater
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Diederik Thomas Boomsma (born 22 June 1978) is a Dutch author, journalist and politician of the JA21 party.

Boomsma worked as a lecturer, commentator and publisher before entering politics. He was previously leader of the Christian Democratic Appeal on Amsterdam Council and then a member of the House of Representatives for New Social Contract (NSC) between 4 July 2024 and 21 August 2025. He served as NSC's migration spokesman and stood in its leadership contest to replace Pieter Omtzigt before resigning from the party.