Cast:

Leonardo DiCaprio ... Billy Costigan
Matt Damon ... Colin Sullivan
Jack Nicholson ... Frank Costello
Mark Wahlberg ... Dignam
Martin Sheen ... Queenan
Ray Winstone ... Mr. French
Vera Farmiga ... Madolyn
Anthony Anderson ... Brown
Alec Baldwin ... Ellerby
Kevin Corrigan ... Cousin Sean
James Badge Dale ... Barrigan
David O'Hara ... Fitzy
Mark Rolston ... Delahunt

Crew:

Directed by Martin Scorsese

Writing credits
William Monahan (screenplay), Siu Fai Mak (2002 screenplay Wu jian dao) (as Alan Mak) and Felix Chong (2002 screenplay Wu jian dao)

Produced by
Michael Aguilar, G. Mac Brown, Doug Davison, Brad Grey, Kristin Hahn, Graham King, Roy Lee, Gianni Nunnari, Brad Pitt, Joseph P. Reidy, Rick Schwartz, Emma Tillinger

Original Music by Howard Shore

Cinematography by Michael Ballhaus

Film Editing by Thelma Schoonmaker

Casting by Ellen Lewis

Production Design by Kristi Zea

Art Direction by Teresa Carriker-Thayer

Set Decoration by Leslie E. Rollins

Costume Design by Sandy Powell