Neil Kevin Hennessy (born December 12, 1978) is a musician and music producer/engineer from Chicago, Illinois. He currently plays in The Lawrence Arms, Colossal, The Falcon, Smoking Popes, and Demon Beach. He has also been a member of Baxter, The Killing Tree, and Quattro.

Hennessy works at Atlas Studios in Chicago with Matt Allison. He co-wrote the Rise Against song Swing Life Away.

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