The Article 14 of the Constitution of the Republic of Lithuania establishes Lithuanian as the state language.
The Law on the State Language (1995) regulates the use of the state language in public life of Lithuania, protection and control of the state language, and the responsibility for violations of the Law on the State Language. The Law does not apply to the unofficial communication of the population and the language of events of religious communities as well as persons, belonging to ethnic communities.
The Law on the State Language Inspectorate (2001) establishes the objectives, functions, organisation and procedure of work of the State inspectorate of Language, as well as the rights, duties and responsibilities of the employees of the Inspectorate.
The Law on the State Commission of the Lithuanian Language (1993) establishes the Commission as the state institution which shall be founded, reorganised and abolished by the Seimas. The Law also sets up the composition and procedure of formation of the Language Commission, as well as its tasks, operating principles and rights.