John Costello may refer to:
- John Costello (baseball) (born 1960), American baseball pitcher
- John Costello (English footballer) (1890–1915), English footballer
- John Costello (historian) (1943–1995), British military historian
- John A. Costello (1891–1976), Taoiseach of Ireland
- John M. Costello (1903–1976), U.S. Representative from California
- John Costello (Medal of Honor) (1850–?), U.S. Navy sailor and Medal of Honor recipient
- John Costello (pastoralist) (1838–1923), Australian pastoralist
- John W. Costello (born 1927), American attorney and politician in Massachusetts
- John Costello (Gaelic footballer), Gaelic football player from County Laois
- John P. Costello (1947–2010), U.S. Army general
See also
- John Costelloe (politician) (c. 1900–?), Irish politician, member of Seanad Éireann from 1963 to 1965
- John Costelloe (actor) (1961–2008), American actor
Topics referred to by the same termThis disambiguation page lists articles about people with the same name. If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: