Peter Mark Roget (1779–1869) was a British physician and lexicographer known for his thesaurus.

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Roget may also refer to:

• Roget's Thesaurus, a widely used English-language thesaurus by Peter Mark Roget

• Dominique Mansuy Roget (1760–1832), French knight and baron
• Juan Roget (c. 1550–1624), Catalan spectacle maker and possible inventor of the telescope
• Leo Roget (born 1977), English footballer
• Léon Roget (1858–1909), Belgian soldier and colonial administrator

• Rogeting, modifying a source by using synonyms to fool plagiarism detection software
• "The Mystery of Marie Rogêt", 1842 short story by Edgar Allan Poe

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