'''Basa baku''' (uga disebutkaran '''dhialèk baku''' utawa '''dhialèk kabakokaké''') iku varian basa sing dianggo déning wong-wong sajeroning [[wacana]] umum.<ref name="fineganp14">{{Cite book|title=Language: Its Structure and Use|edition=5th|last=Finegan|first=Edward|year=2007|publisher=Thomson Wadsworth|location=Boston, MA, USA|isbn=978-1-4130-3055-6|page=14}}</ref> Utawa, basa baku iku varian basa sing ngalami [[Standarisasi|pambakonan]]. Sarana lelakon iku, basa ditata saperlu digawé paramasastrané lan bausastrané lan ditulisaké tumrap pustaka-pustaka rujukan mangkono.<ref name="fineganp14"/> Lumrahé, varian basa sing dibakokaké iku [[dhialèk]] enggon-enggonan sing dicaturaké ing laladan punjering padagangan lan [[pamaréntah]]an awit tumuwuh kabutuhan marang basa kanggo kaperlon sing ngungkuli kabutuhan basa enggon-enggonan. Basa baku kena [[Basa plurisèntris|plurisèntris]]<ref>[[Standard language#refClyne1992|Clyne 1992]]</ref> (contoné [[Basa plurisèntris|basa Arab]], [[Basa plurisèntris|Inggris]], Jerman, [[Basa plurisèntris|Parsi]], [[Basa plurisèntris|Serbo-Kroasia]], Prancis, [[Basa plurisèntris|Portugis]], lan Spanyol)<ref>{{Cite book|last=Kordić|first=Snježana|authorlink=Snježana Kordić|language=Spanish|title=Lengua y Nacionalismo|trans_title=Language and Nationalism|url=http://www.euphoniaediciones.com/plataforma/libros/lengua-y-nacionalismo-17-89-7-2-1|location=Madrid|publisher=Euphonía Ediciones|year=2014|pages=79–151|isbn=978-84-936668-8-0|ol=16814702W}}</ref> utawa monosèntris (contoné basa Islan, [[Basa Italia|Itali]],<ref>[http://www.language-capitals.com/italian_varieties.php Italian language]. language-capitals.com</ref> [[Basa Jepang|Jepang]],<ref name="Clynepg3">[[Standard language#refClyne1992|Clyne 1992]], p. 3.</ref> lan [[Basa Rusia|Ruslan]]<ref name="Clynepg3"/>).<ref>{{Cite book|last=Daneš|first=František|editor1-last=Ammon|editor1-first=Ulrich|editor2-last=Dittmar|editor2-first=Norbert|editor3-last=Mattheier|editor3-first=Klaus J|title=Sociolinguistics: An International Handbook of the Science of Language and Society II|publisher=Mouton de Gruyter|page=1507|chapter=Herausbildung und Reform von Standardsprachen|trans_chapter=Development and Reform of Standard Languages|series=Handbücher zur Sprach-und Kommunikationswissenschaft 3.2|location=Berlin & New York|year=1988|isbn=3-11-011645-6|oclc=639109991}}</ref>
Basa tulis baku kala-kala ditembungaké sarana tembung [[Basa Jerman|Jerman]] ''Schriftsprache''.
