Pieter Herman Omtzigt (born 8 January 1974) is a Dutch former politician who served as a member of the House of Representatives between 2003 and 2025 apart from a short interruption between June and October 2010. He was a member of the Christian Democratic Appeal (CDA), but left in 2021 and continued as an independent. In August 2023, he founded a new party called New Social Contract, its name taken from his 2021 manifesto. Three months later, his party won 20 out of 150 seats in the 2023 Dutch general election.