Thelma Schoonmaker (born January 3, 1940) is an American film editor, best known for her collaboration over five decades with director Martin Scorsese. She is the recipient of numerous accolades, including three Academy Awards, two BAFTA Awards, and four ACE Eddie Awards. She has been honored with the British Film Institute Fellowship in 1997, the Golden Lion for Lifetime Achievement in 2014, and the BAFTA Fellowship in 2019. started working with Scorsese on his debut feature film, Who's That Knocking at My Door (1967), and has edited all of his films since Raging Bull (1980). She has received nine nominations for the Academy Award for Best Film Editing, winning three—for Raging Bull, The Aviator (2004), and The Departed (2006), both records. She has also been nominated eleven times for the BAFTA Award for Best Editing, winning for Raging Bull and Goodfellas (1990).
