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Louis Cancelmi
Acting
Biography
Louis Cancelmi (born 9 June 1978, Pittsburgh, Pennsylvania) is an American stage and film actor who studied Theater at Yale College. He is a frequent performer with the Public Theater, appearing at both its Astor Library home and the Delacorte Theater in Central Park (including The Tempest in Shakespeare in the Park, 2015). He is best known for playing Mike D'Angelo in HBO's Boardwalk Empire (2014, 6 episodes), Victor Mateo in Showtime's Billions (2016–2023, 45 episodes), Sally Bugs in Martin Scorsese's The Irishman (2019), and Kelsie Morrison in Killers of the Flower Moon (2023). He is married to actress Elisabeth Waterston (m. 2006), whose father is actor Sam Waterston. His filmography i…
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Louis Cancelmi (born 9 June 1978, Pittsburgh, Pennsylvania) is an American stage and film actor who studied Theater at Yale College. He is a frequent performer with the Public Theater, appearing at both its Astor Library home and the Delacorte Theater in Central Park (including The Tempest in Shakespeare in the Park, 2015). He is best known for playing Mike D'Angelo in HBO's Boardwalk Empire (2014, 6 episodes), Victor Mateo in Showtime's Billions (2016–2023, 45 episodes), Sally Bugs in Martin Scorsese's The Irishman (2019), and Kelsie Morrison in Killers of the Flower Moon (2023). He is married to actress Elisabeth Waterston (m. 2006), whose father is actor Sam Waterston. His filmography includes The Amazing Spider-Man 2 (2014, as the Man in Black Suit), 21 Bridges (2019), The Eyes of Tammy Faye (2021, as Richard Fletcher), Pet Shop Days (2023), Sorry, Baby (2025), In the Hand of Dante (2026, dual roles as Lefty / Guido da Polenta), and The Bride! (2026). On television he has also appeared in Blue Bloods (2015–2016, as Thomas Wilder), The Looming Tower (2018, as Vince Stuart, 10 episodes), A Murder at the End of the World (2023, as Todd Andrews, 7 episodes), The Penguin (2024, as Rex Calabrese), and Government Cheese (2025, as Jean-Guy Prevost, 5 episodes).
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BODY OF WORK
Louis Cancelmi's Filmography
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Mayday
as Maj Pete Sanders
In the Hand of Dante
as Lefty / Guido Novello Da Polenta
The Bride!
as Officer Goodman
Sorry, Baby
as Preston Decker
Mooch
as Louis
Pet Shop Days
as Walker
Killers of the Flower Moon
as Kelsie Morrison
She's Clean
Give or Take
as Terrence
The Eyes of Tammy Faye
as Richard Fletcher
Team Marco
as Richie
The Irishman
as Sally Bugs
21 Bridges
as Bush
Inez & Doug & Kira
as John
No Poster
Georgica
as John
Mass Hysteria
as Giles
Windows on the World
as Miguel
Fits and Starts
as Daniel
Memory Box
as Josh
Tramps
as Jimmy
Manhattan Romance
as Jarrod
And It Was Good
as Sesto Basti
Please Be Normal
as Victor
The Amazing Spider-Man 2
as Man in Black Suit
Gayby
as Louis
Americana
as Georges Stannis
Green
as Dustin
No Poster
The Ride of Tom & Valkyrie
as Miguel
Gabi on the Roof in July
as Garrett
No Poster
Da Vinci
as Duke Sforza
No Poster
What Happens at Night
as Larus
No Poster
First Person Singular
as Louis
Deception Road
as Frank