John Costello is a former Gaelic football player from County Laois in Ireland.
He played for many years on the Laois senior football team in midfield.
He also represented London, New York, Leinster, and Ireland.
In 1986, he was a member of the Laois senior football team that won the county's second National Football League title.
This Laois Gaelic football biographical article is a stub.