Barnett \b(a)-rne-tt, bar-nett\ as a boy's name is pronounced bar-NET. It is of Old English origin, and the meaning of Barnett is "burned clearing". Also possibly from the English aristocratic title "baronet". Other ranks of English nobility such as Duke, Earl, and Baron are occasionally used as given names.
Barnett has 8 variant forms: Barnet, Barney, Barnie, Baronet, Baronett, Barrie, Barron and Barry.