John Devaney

John Devaney may refer to:


 * John Devaney (businessman) (1946–2018), British businessman
 * John P. Devaney (1883–1941), Chief Justice of the Minnesota Supreme Court
 * John Devaney (ice hockey) (born 1958), Canadian ice hockey player
 * John P. Devaney (fireboat), an FDNY fireboat named in honor of a firefighter who died on the job