Pepijn van Houwelingen (born 24 February 1980) is a Dutch politician of the conservative populist party Forum for Democracy (FvD). He was elected to the House of Representatives in March 2021, and he served as a member of parliament until he lost his bid for re-election in November 2023. He returned to the House between January 2024 and November 2024 and once more between April 2025 and September 2025. Van Houwelingen holds a doctorate and has worked for The Netherlands Institute for Social Research for a decade.

Van Houwelingen has received media attention for several controversial statements with regard to his opposition to globalist ideas and the government's measures to mitigate the COVID-19 pandemic.

Van Houwelingen was born in 1980 in the Overijssel city Enschede and grew up in its Helmerhoek neighborhood with his three sisters and one brother. He attended the gymnasium of the secondary school Jacobus College starting in 1992 and studied industrial engineering at the University of Twente from 1998 until 2002. Van Houwelingen subsequently did another master's in (philosophy of) economics and another bachelor's in Japanese studies at the same time at Erasmus University Rotterdam. He moved to Japan in 2004 to study at the Hiroshima City University and obtained his PhD in 2009 after finishing his dissertation titled Social capital in Japan.

After finishing his studies, Van Houwelingen worked for half a year in demand and supply management at Canon Europe in Amstelveen. In February 2010, he took a job as a scientific assistant specialized in citizen participation at the Netherlands Institute for Social Research, a government agency, where he remained employed until he became an MP.

While working at the Netherlands Institute for Social Research, Van Houwelingen voiced his opposition to what he perceived as the growing power of the European Union (EU). He also wrote that he favored direct democracy with referendums and that he supported decentralization.

Van Houwelingen was one of the initiators of Burgercomité-EU (EU citizen committee), which aims to make decisions surrounding the EU more democratic. After a law was passed that made it possible to trigger an advisory referendum, the organization cooperated with GeenStijl and Forum for Democracy to get a referendum on the approval of the European Union–Ukraine Association Agreement. The referendum was held in 2016 after enough signatures had been collected, and Burgercomité-EU campaigned against the agreement. Van Houwelingen also co-authored a manifesto opposing it. A few weeks after the referendum, NRC Handelsblad revealed that a novel by Van Houwelingen had been published in 2010 under the pseudonym Vossius. The book's main character argues in favor of city-states, discrimination of minorities, oppression of women, and the abolition of human rights, and he calls the EU the source of many evils.

At the end of 2019, Van Houwelingen was involved in the establishment of the broadcasting corporation Ongehoord Nederland (Unheard Netherlands), which would become part of the Dutch public broadcasting system. Van Houwelingen was a guest during its first broadcast on 22 February 2022.

In the 2021 general election, Van Houwelingen was Forum for Democracy's eighth candidate. He was elected, receiving 430 preference votes, and was sworn into the House of Representatives on 31 March 2021. Van Houwelingen became the FvD's spokesperson for the European Union, referendums, social affairs, and public health. Finances and economic affairs were added to his specialties when three Forum for Democracy MPs left the party in May 2021. He is a member of the United States contact group and of the Committees for Agriculture, Nature and Food Quality; for European Affairs; for Finance; for Health, Welfare and Sport; for the Interior; for Petitions; and for Social Affairs and Employment. While a House member, Van Houwelingen argued against scale-ups and mergers in the public sector, and an essay by him about the issue called Microfobie (Microphobia) was published by Forum for Democracy's scientific institute in 2021. His position led him to voice his opposition to the proposed merger of the municipalities of Scherpenzeel and Barneveld. He also attempted to undo a 2019 merger between Groningen en Haren through a bill, but it did not receive a House majority. Besides, Van Houwelingen opposed the power and influence held by supranational organizations such as the European Union, the World Health Organization, and the World Economic Forum, considering it to be a globalist power grab. In 2022, he introduced a bill in the House together with party leader Thierry Baudet to reintroduce consultative referendums comparable to those organized in Switzerland. Some parties complained that the bill remained vague on details, and the proposal was ultimately rejected.