A quotation or quote is the repetition of a sentence, phrase, or passage from speech or text that someone has said or written. In oral speech, it is the representation of an utterance (i.e. of something that a speaker actually said) that is introduced by a quotative marker, such as a verb of saying. For example: John said: "I saw Mary today". Quotations in oral speech are also signaled by special prosody in addition to quotative markers. In written text, quotations are signaled by quotation marks. Quotations are also used to present well-known statement parts that are explicitly attributed by citation to their original source; such statements are marked with (punctuated with) quotation marks.

As a form of transcription, direct or quoted speech is spoken or written text that reports speech or thought in its original form phrased by the original speaker. In narrative, it is usually enclosed in quotation marks, but it can be enclosed in guillemets (« ») in some languages. The cited speaker either is mentioned in the tag (or attribution) or is implied. Direct speech is often used as a literary device to represent someone's point of view. Quotations are also widely used in spoken language when an interlocutor wishes to present a proposition that they have come to know via hearsay.

Direct speech and indirect speech can also refer to the difference between speech acts where the illocutionary force is conveyed directly and indirectly, respectively. Thus, "What time is it?" is a direct speech act that might also be expressed by the indirect speech act "Do you know what time it is?"

A crucial semantic distinction between direct and indirect speech is that direct speech purports to report the exact words that were said or written, whereas indirect speech is a representation of speech in one's own words.

The distinction between indirect speech and free indirect speech is mostly one of style, hence free indirect speech is sometimes described as a free indirect style.

A quotation can also refer to the repeated use of units of any other form of expression, especially parts of artistic works: elements of a painting, scenes from a movie or sections from a musical composition.

Quotations are used for a variety of reasons: to illuminate the meaning or to support the arguments of the work in which it is being quoted, to provide direct information about the work being quoted (whether in order to discuss it, positively or negatively), to pay homage to the original work or author, to make the user of the quotation seem well-read, and/or to comply with copyright law. Quotations are also commonly printed as a means of inspiration and to invoke philosophical thoughts from the reader. Pragmatically speaking, quotations can also be used as language games (in the Wittgensteinian sense of the term) to manipulate social order and the structure of society.

Famous quotations are frequently collected in books that are sometimes called quotation dictionaries or treasuries. Of these, Bartlett's Familiar Quotations, The Oxford Dictionary of Quotations, The Columbia Dictionary of Quotations, The Yale Book of Quotations and The Macmillan Book of Proverbs, Maxims, and Famous Phrases are considered among the most reliable and comprehensive sources. Diaries and calendars often include quotations for entertainment or inspirational purposes, and small, dedicated sections in newspapers and weekly magazines—with recent quotations by leading personalities on current topics—have also become commonplace.