The Toubon Law (full name: law 94-665 of 4 August 1994 relating to usage of the French language), is a law of the French government mandating the use of the French language in official government publications, in advertisements, in the workplace, in commercial contracts, in some other commercial communication contexts, in government-financed schools, and some other contexts. The law does not concern private, non-commercial communications, web pages or publications from individuals or private bodies.
The law takes its common name from Jacques Toubon, a conservative, who was Minister of Culture when it was passed and who proposed the law to Parliament. A nickname is Loi Allgood – "Allgood" is a morpheme-for-morpheme translation of "Toubon" into English, whereas the law can largely be considered to have been enacted in reaction to the increasing usage of English in advertisements and other occasions in France.