Keyword may refer to:

Computing

* Keyword (Internet search), a word or phrase typically used by bloggers or online content creator to rank a web page on a particular topic *

Index term In information retrieval, an index term (also known as subject term, subject heading, descriptor, or keyword) is a term that captures the essence of the topic of a document. Index terms make up a controlled vocabulary for use in bibliographic reco ...

, a term used as a keyword to documents in an information system such as a catalog or a search engine *

Keyword advertising Keyword advertising is a form of online advertising in which an advertiser pays to have an advertisement appear in the results listing when a person uses a particular phrase to search the Web, typically by employing a search engine. The particular ...

, a form of online advertising * Keyword clustering, a search engine optimization technique * A reserved word in a programming language

Other

* Keyword (linguistics), word which occurs in a text more often than we would expect to occur by chance alone * Keyword (rhetoric), a word that academics use to reveal the internal structure of an author's reasoning * '' Keywords: A Vocabulary of Culture and Society'', 1973 non-fiction book by Raymond Williams * "Keyword" (Tohoshinki song), a 2008 J-pop song {{Disambiguation