Only states, which are defined as sovereign, internationally recognised, independent political entities, are listed. This is not a list of countries or nations, although many states listed are simultaneously also countries and/or nations.
Official language: one designated as having a unique legal status in the state, typically, the language used in a nation's legislative bodies, and often, official government business
Regional language: one designated as having official status limited to a specific area, administrative division, or territory of the state (on this page a regional language will have parentheses next to it that contain a region, province, etc. where the language has regional status)
Minority language: (as used here) one spoken by a minority population within the state and officially designated as such; typically afforded protection and designated an officially permissible language for legal and government business in a specific area or territory of the state (on this page a minority language will be followed by parentheses that identify its minority status)
National language: one that uniquely represents the national identity of a state, nation, and/or country and so designated by a country's government; some are technically minority languages (on this page a national language will be followed by parentheses that identify it as a national language status). Some countries have more than one language with this status.
There is no "official language" of the United Kingdom - meaning that any language may be used to in the course of business or legal proceedings. Generally a contract is valid and binding regardless of the language in which it was made. English however is most commonly spoken and written, with several regional languages having been awarded special legal designation.
No official language nationwide, English is the de facto but not the de jure official language (at the federal level). Spanish is the second-most commonly used language in the U.S. and many forms and documents are published in both languages.
^Slovak language is defined as official language together with Czech language by several laws – e.g. law 500/2004, 337/1992. Source: http://portal.gov.cz. Cited: "Například Správní řád (zákon č. 500/2004 Sb.) stanovuje: "V řízení se jedná a písemnosti se vyhotovují v českém jazyce. Účastníci řízení mohou jednat a písemnosti mohou být předkládány i v jazyce slovenském..." (§16, odstavec 1). Zákon o správě daní a poplatků (337/1992 Sb.) „Úřední jazyk: Před správcem daně se jedná v jazyce českém nebo slovenském. Veškerá písemná podání se předkládají v češtině nebo slovenštině..." (§ 3, odstavec 1). http://portal.gov.cz
^ abcdefghijklmCitizens belonging to minorities, which traditionally and on long-term basis live within the territory of the Czech Republic, enjoy the right to use their language in communication with authorities and in front of the courts of law (for the list of recognized minorities see National Minorities Policy of the Government of the Czech Republic). The article 25 of the Czech Charter of Fundamental Rights and Basic Freedoms ensures right of the national and ethnic minorities for education and communication with authorities in their own language. Act No. 500/2004 Coll. (The Administrative Rule) in its paragraph 16 (4) (Procedural Language) ensures, that a citizen of the Czech Republic, who belongs to a national or an ethnic minority, which traditionally and on long-term basis lives within the territory of the Czech Republic, have right to address an administrative agency and proceed before it in the language of the minority. In case that the administrative agency doesn't have an employee with knowledge of the language, the agency is bound to obtain a translator at the agency's own expense. According to Act No. 273/2001 (About The Rights of Members of Minorities) paragraph 9 (The right to use language of a national minority in dealing with authorities and in front of the courts of law) the same applies for the members of national minorities also in front of the courts of law.
^Priedīte, Aija (2005). "Surveying Language Attitudes and Practices in Latvia". Journal of Multilingual and Multicultural Development26 (5): 409–424. doi:10.1080/01434630508668413.<quote>In 1992, following further amendments to this directive, Latvian was established as the only official language. It took 410 Journal of Multilingual and Multicultural Development seven more years before the State language law was adopted in 1999, with further amendments in the years 2000, 2001 and 2002.</quote>
^ abArticle 152 of the Constitution of Malaysia designated Malay as the national language. Section 2 of that article allowed English to be used officially until otherwise provided by Parliament. In 1967, the Parliament of Malaysia passed the National Language Act, making Malay the official language of Malaysia. The act does, however, allow the use of English for some official purposes. On 11 July 1990, following the amendment of the National Language Act 1963/67 (Act 32) (Revised in 1971), Malay replaced English as the official language of the courts in West Malaysia. The amending Act provided English to be used in the Courts in West Malaysia where it deems necessary in the interest of Justice. East Malaysia continued using English as the official language in their courts. Since 2007, the official policy is to refer to the national language as the Malaysian language (Bahasa Malaysia), although legislation still refers to the Malay language (Bahasa Melayu).