Brigitte Rossigneux, born February 28, 1951, is a French journalist, who worked for a long time at Le Canard enchaîné. She is the mother of four children, including the journalist Aude Rossigneux, from her union with Louis-Marie Horeau.

She studied at the University of Vincennes from 68 to 71. She obtained a degree in German, and taught for three years at the private high school Sainte-Croix de Neuilly, before turning to journalism.

A graduate of the Center for Training Journalists (CFJ, class of 1976) in Paris, she worked for Le Monde, F Magazine, Droit de réponse (TF1), Taxi (FR3), Les Dossiers du Canard enchaîné. She is a specialist in defense issues. She has also made documentaries, including Les Apprentis sorciers, with André Gazut in 1996, on France's nuclear policy and the risks of radiation to which French soldiers were exposed during experiments in the Sahara in Algeria. She is the author of a series of five documentaries Le Nouvel Homme des casernes, on the professionalization of the armies (2000) for the Cinquième. She has carried out numerous investigations into the French security system.

Her laptop was stolen on the night of June 2 to 3, 2001, during a burglary of the offices of the Canard enchaîné, while she was working on embarrassing cases for French military officials. The journalist wondered about the reasons for this theft, and believed that it could be motivated by the desire to identify the names of her contacts at the Ministry of Defense.