Wilhelmina Johanna Maria "Willemijn" Aerdts (born 21 April 1983) is a Dutch academic and politician of the Democrats 66 (D66), who has served as State Secretary for the Digital Economy and Digital Sovereignty in the Jetten cabinet since 23 February 2026. She previously served as a member of the Senate between 2023 and 2026, and was a lecturer and researcher at the Institute of Security and Global Affairs of Leiden University.
Aerdts obtained her master's degree in International Relations in Historical Perspective from Utrecht University and subsequently obtained an LLM in International Public Law. At Leiden University, she worked on her PhD on the supervision of the Dutch Military Intelligence and Security Service and the AIVD. In May 2023, her book ('Services with secrets') was published.
Between 2021 and 2023, Aerdts was the chair of the Els Borst Network, the women's wing of D66. She was placed second on the party's candidate list for the 2023 Senate election. After being elected, she has been a member of the Senate since 13 June 2023.
In February 2026, she was nominated for the position of State Secretary for the Digital Economy and Digital Sovereignty in the Jetten cabinet. She was sworn in on 23 February 2026.