The French: Trésor de la langue française au Québec (Treasury of the French language in Quebec, TLFQ) is a project created in the 1970s with the primary objective of establishing a scientific infrastructure for research into the history of Quebec French and, also, its current usage.[1] The project is affiliated to the French: Centre interdisciplinaire de recherches sur les activités langagières (CIRAL) at Université Laval.
The main fruit of the project is the French: Dictionnaire historique du français québécois (Historical dictionary of Quebec French), published in 1998. It has also contributed to other dictionaries, such as the French: Dictionnaire du français Plus (1988), the French: Dictionnaire universel francophone, the French: Dictionnaire du français acadien (1999), and the French: [[Petit Larousse]] (2001 to 2006 editions).
Since the late 1990s, the TLFQ has led the international project French: Base de données lexicographiques panfrancophone (Panfrancophone lexicographic database) (BDLP), whose goal is to develop and bring together databases representative of the French used in Francophonie member countries.