The Public Office for the Breton Language (Breton: Ofis Publik ar Brezhoneg; French: Office Public de la langue bretonne) was established on 15 October 2010 as a public institution, with state and regional cooperation and funding, to promote and develop teaching and use of the Breton language in daily life. It is an example of language revival efforts for minority languages in France.
One of its missions is to collect and distribute socio-linguistic data, in order to approach language revival based in science and facts. It must collect data on the Breton language (Arsellva ar brezhoneg) and publish it, to advise communes for bilingual signage and place names.
It supports TermBret, the cooperative terminology service which publishes glossaries. Finally, it assists individuals, administrations and businesses who want to use the Breton language. (From 1 July 1999 to September 15, 1999, 42 administrations, associations or companies have made an appealed to the national government to allow use of Breton as an official language.)
It was established to replace the Ofis ar Brezhoneg/Office de la langue bretonne, created on 1 May 1999 by the Region of Brittany. That office had a similar mission and worked mostly to promote use of Breton in daily life. In 2001 it initiated Ya d'ar brezhoneg (French: Oui au breton, English: Yes to Breton), an effort to encourage businesses to adopt use of Breton and provide bilingual resources, as well as to encourage communes to establish bilingual signs and tourist materials.
The Office is now an Établissement public de coopération culturelle, a public institution run by a board of directors. They represent local authorities and the French state. It is presided over by Lena Louarn, a councillor elected in the Regional Council of Brittany. The Office is based in Carhaix, where its director Fulup Jakez works. The Observatory of the Breton Language (l'Observatoire de la langue bretonne), led by the deputy director Olier ar Mogn, is located in Rennes.