Herold was born in Reims, France. Her parents are both teachers. She is an alumna in public administration from the Institut d'études politiques de Paris and a master of business from HEC Paris. Since 2002, she has been the editor and spokeswoman of Liberté chérie (Beloved Freedom), a French libertarian think tank. Sabine Herold became known in 2003 when she led an 80,000 member protest advocating reforms in France and demanding a responsible attitude from trade unions. Her stand against the unions led to her being described as the 'new Joan of Arc'.
She has often reflected upon the policy implemented by the British Prime Minister Margaret Thatcher and is commonly called "Mademoiselle Thatcher" by newspapers, a comparison that she considers to be a compliment.
- Liberté, liberté chérie (English: Liberty, Dear Liberty), Sabine Herold and Édouard Fillias, Les Belles Lettres, 2003, ISBN 2-251-44247-2
- Le manifeste des alterlibéraux (English: Manifesto of the Alternative Liberals), Edouard Fillias, Aurélien Véron, Jean-Paul Oury and Sabine Hérold
- Delves Broughton, Philip (4 June 2003). "The new Joan of Arc on a crusade to stop French unions causing misery to millions". London: The Daily Telegraph. Retrieved 2008-01-14.
- Sabine Herold, « mademoiselle Thatcher » in le Journal du dimanche, 18 June 2006
- Randall, Colin (19 June 2006). "'Mlle Thatcher' to run for a seat in parliament". London: The Daily Telegraph. Retrieved 2008-01-14.