Black Mass

Black Mass Cast

70 cast members · 21 with popularity data

Full Cast

Sorted by Buzz Score · May 14, 2026

James 'Whitey' Bulger

FBI Agent Charles McGuire

Benedict Cumberbatch

FBI Agent Robert Fitzpatrick

Peter Sarsgaard

Julianne Nicholson

Marianne Connolly

Agent Scott Gariola

#13,265 overall

#24,485 overall

#34,382 overall

Cary 'Big Shug' Guy

#42,448 overall

Erica McDermott

#43,573 overall

Scott G. Anderson

DEA Agent Eric Olsen (Interrogator)

Lewis D. Wheeler

Jeremiah O'Sullivan

McGuire's Secretary

Berglind Jonsdottir

Anna Bjornsdottir

Ciaran Crawford

Irish Nationalist

Thomas Philip O'Neill

Joey, Big Italian

Gennaro Angiulo

Anthony Molinari

Charlie McTiernan

Charlie's Friend

Richard Donelly

Patrick M. Walsh

Michael Donahue

Kathryn A. Beauchamp

Darin X.L. MacEachern

Jimmy Joe Maher

Boot Shop Owner

Forry Buckingham

World Jai Alai Chairman

Porthole Bartender

Michael F. Murphy

Porthole Customer

DEA Agent Dan Doherty

Little Mary Bulger

Kathleen Bulger

Todd Ryan Jones

Charlie's Friend

Julie Ann Dawson

Floor Dancer (uncredited)

Trevor Williams (uncredited)

Robert E. Walsh

Sr. FBI Official (voice)

Press Photographer

Marion Hussey (uncredited)

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