John is a common English name and surname:

John may also refer to:

Jesse Davis (born November 9, 1965) is an American jazz saxophonist. Davis began as a student in Ellis Marsalis's New Orleans Center for Creative Arts. After graduating, Jesse Davis embarked on a productive jazz career, recording 8 albums on the Concord Jazz label, alongside collaborations with such artists as Jack McDuff and Illinois Jacquet. Davis has studied music at Northeastern Illinois University, and in 1989 he received a "Most Outstanding Musician award" from Down Beat magazine.

James Joseph "Whitey" Bulger, Jr. (born September 3, 1929) is a former organized crime figure from Boston, Massachusetts. Local folklore depicted Bulger as a Robin Hood–style social bandit dedicated to protecting the neighborhood and its residents. Bulger allegedly masterminded a protection racket targeting drug kingpins and those running illegal gambling operations. Based upon the testimony of former associates, Federal prosecutors have indicted Bulger for 19 murders.

Beginning in 1975, Bulger served as an informant for the Federal Bureau of Investigation (FBI). As a result, the Bureau largely ignored his organization in exchange for information about the inner workings of the Italian American Patriarca crime family. Beginning in 1997, the New England media exposed criminal actions by federal, state, and local law enforcement officials tied to Bulger. For the FBI especially, this has caused great embarrassment. On December 23, 1994, after being tipped off by his former FBI handler about a pending indictment under the RICO Act, Bulger fled Boston and went into hiding. For sixteen years, he remained at large. For twelve of those years, Bulger was prominently listed on the FBI Ten Most Wanted Fugitives list.