Thibault de Montaigu (born 21 Decembre 1978 in Boulogne-Billancourt) is a French writer and journalist. He is the son of French business woman Françoise Gallimard.
After studying at lycée Henri-IV, de Montaigu entered Sciences Po then the Centre de formation des journalistes in Paris. He began his career at Libération in 2003 with the culture and guide services. Since then, he has collaborated on numerous publications (L'Officiel, Jalouse , l'Officiel Voyages, l'Optimum, Milk Magazine , Madame Figaro, Paris Match...).
He wrote five novels noticed by the critics which were selected in particular for the prix de Flore and the prix Interallié.
In 2011, he was curator of the exhibition "La Parisienne" at the Galerie des Galeries, which brought together many artists (Catherine Millet, Bertrand Burgalat, Stanislas Merhar Valérie Mréjen etc.) around the fictional apartment of a Parisienne.