John Finn (born 1952) is an American actor.

John Finn may also refer to:

• John Finn (American football) (1895–1970), football player
• John William Finn (1909–2010), sailor and Medal of Honor recipient
• USS John Finn, a 2015 Arleigh Burke-class destroyer named for John William Finn
• John Finn (politician), Canadian politician
• Jon Finn (born 1958), American rock musician and guitarist

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