
Jay Giannone is an American actor, director, writer, and producer known for his work in both film and television. He is often recognized for his supporting roles in major films, particularly those in the crime and thriller genres. Some of his notable acting roles include appearances in films like The Departed (2006), directed by Martin Scorsese, where he played a small but memorable part, and Patriots Day (2016), a film about the Boston Marathon bombing directed by Peter Berg.
In addition to his acting career, Giannone has worked behind the scenes as a director and writer, and he often draws on his personal experiences growing up in South Boston, a neighborhood known for its working-class roots and proximity to some of the real-life events and figures portrayed in his projects. Giannone is known for his gritty, authentic portrayal of urban characters, and he has worked closely with other actors and directors in the Boston film community.

The Departed
2006 · as Detective #4 Tailing Queenan

Gone Baby Gone
2007 · as Steve Penteroudakis

American Hustle
2013 · as Suburban Businessman

Safe
2012 · as Detective Kolfax

The Game Plan
2007 · as Doorman at Club

Patriots Day
2016 · as Jimmy

Lansky
2021 · as Salvatore Maranzano

I ♥ Huckabees
2004 · as Construction Worker (uncredited)

Three Kings
1999 · as Fleeing Republican Guard / Sniper - Oasis Bunker

The Iceman
2012 · as Dominick Provenzano

Hollow Point
2019 · as Cope

Love Me Dead
2024 · as Mac

Confidence
2003 · as Car Salesman

Take Back
2021 · as Jack

By the Gun
2014 · as Joe

The Penitent Thief
2021 · as Dismas

From the Head
2011 · as Mark

Phoenix
2023 · as Kirill Vestamous