Grant Barrett (born 1970) is an American lexicographer, specializing in slang, jargon and new usage, and the author and compiler of language-related books and dictionaries. He is a co-host and co-producer of the American weekly, hour-long public radio show and podcast A Way with Words. He has made regular appearances on Christopher Kimball's Milk Street Radio, is often consulted as a language commentator, and has written for The New York Times and The Washington Post, and served as a lexicographer for Oxford University Press and Cambridge University Press.