Ethnologue: Languages of the World (stylized as Ethnoloɠue) is an annual reference publication in print and online that provides statistics and other information on the living languages of the world. It is the world's most comprehensive catalogue of languages. It was first issued in 1951, and is now published by SIL International, an American evangelical Christian non-profit organization.
Ethnologue has been published by SIL International (formerly known as the Summer Institute of Linguistics), a Christian linguistic service organization with an international office in Dallas, Texas. The organization studies numerous minority languages to facilitate language development, and to work with speakers of such language communities in translating portions of the Bible into their languages. Despite the Christian orientation of its publisher, Ethnologue is not ideologically or theologically biased.
Ethnologue includes alternative names and autonyms, the number of L1 and L2 speakers, language prestige, domains of use, literacy rates, locations, dialects, language classification, linguistic affiliations, typology, language maps, country maps, publication and use in media, availability of the Bible in each language and dialect described, religious affiliations of speakers, a cursory description of revitalization efforts where reported, intelligibility and lexical similarity with other dialects and languages, writing scripts, an estimate of language viability using the Expanded Graded Intergenerational Disruption Scale (EGIDS), and bibliographic resources. Coverage varies depending on languages. For instance, as of 2008, information on word order was present for 15% of entries while religious affiliations were mentioned for 38% of languages. According to Lyle Campbell "language maps are highly valuable" and most country maps are of high quality and user-friendly.
Ethnologue gathers information from SIL's thousands of field linguists, surveys done by linguists and literacy specialists, observations of Bible translators, and crowdsourced contributions.