John Finnegan
- Birth Date
- 8/18/1926 - 7/29/2012
- Birth Place
- New York, New York, USA
- Known For
- Acting
John P. "J.P." Finnegan was an American film and television actor, mostly known for his recurrent role on the American crime fiction series Columbo. He voiced the villainous character Warren T. Rat in the 1986 Don Bluth film An American Tail.
