ISO 3166-1

<onlyinclude> ISO 3166-1, as part of the ISO 3166 standard, provides codes for the names of countries and dependent territories, and is published by the International Organization for Standardization (ISO). The official name of the standard is Codes for the representation of names of countries and their subdivisions – Part 1: Country codes. It defines three sets of country codes:ISO 3166-1 alpha-2, a two-letter system, used in many applications, most prominently for country code top-level domains (ccTLDs), with some exceptions.ISO 3166-1 alpha-3, a three-letter system, which allows a better visual association between country name and code element than the alpha-2 code.ISO 3166-1 numeric, a three-digit numerical system, with the advantage of script (writing system) independence, and hence useful for people or systems which uses a non-Latin script. This is identical to codes defined by the United Nations Statistics Division.</onlyinclude>
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