Willem Jacob "Molly" Geertsema (18 October 1918 - 27 June 1991) was a Dutch civil servant and politician. He was a member of the People's Party for Freedom and Democracy (VVD).
Geertsema was a member of the House of Representatives (parliamentary leader) and the Senate. He was also a deputy prime minister, government minister, political leader, councillor (Leiden and The Hague), mayor (Warffum and Wassenaar) and Queen's Commissioner of Gelderland.
- Biography, Parlement.com
- Biography, Biografisch Woordenboek Gelderland
- Biography, Biografisch Woordenboek van Nederland: 1880-2000
- Biography, Documentatiecentrum Nederlandse Politieke Partijen