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.

[18] He is the vice president of communications and technology for the American Dialect Society, a former member of the editorial review board for the academic journal American Speech, former contributor and editor of the journal's "Among the New Words" column, and a co-founder of the online dictionary Wordnik.

[19][20] Between 2004 and 2014, Barrett created an annual words-of-the-year list which has been featured in The New York Times and The Dallas Morning News.

[21][22][23][24] Barrett frequently comments on language matters in the popular press, as a radio and podcast guest, as a writer, and as a quoted source.