Gilles Delouche (3 August 1948, Orléans), is a French scholar of classical literature of the Rattanakosin Kingdom (Thai language), professor at the Institut national des langues et civilisations orientales (INALCO) since 1987 after teaching from 1971 to 1987 at the Faculty of Arts of the Silpakorn University (Thaïlande), which awarded him an honorary degree.
He was president of the Institut national des langues et civilisations orientales from 2001 to 2005.
His teachings focus on introducing the syntax, but especially on Siamese versification and classical works, from the origins to the seventeenth.
He is the author of some fifty articles published in French, English and Thai, focusing on issues of dating and restoration of classic Siamese manuscripts, as well as work on the origins of the first embodiment of the Siamese unity in the first part of the Ayudhya period (1350–1656).