Lists of languages

Spoken

 * According to SIL International, there are 6,909 spoken languages, as cataloged and described in the book Languages of the World (ISBN 0883128152). The International Organization for Standardization (ISO) assigns codes for most languages: for example, ISO 639-3 uses "eng" for English and "apk" for Plains Apache, one of the five Apache languages of North America.

ISO

 * 639-1, 639-2, 639-5
 * List of ISO 639-3 codes

History

 * List of languages by first written accounts
 * List of languages by time of extinction

Linguistic
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Constructed languages
Constructed languages

Official languages

 * List of official languages
 * List of official languages by state
 * List of official languages by institution
 * List of languages by number of countries where the language is spoken

Sign language and Writing system

 * List of languages by writing system
 * List of sign languages
 * List of sign languages by number of native signers

Families

 * List of language families, including, by number of native speakers
 * }