Ronald Bronstein is an American film director, screenwriter, editor and actor. He directed, wrote and edited the 2007 film Frownland. He is also known as a prominent collaborator of the Safdie brothers, having acted as editor on all their features and co-written all their screenplays since 2009's Daddy Longlegs.
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Ronald Bronstein (born 1973 or 1974) is an American screenwriter, film editor, director and actor. He directed, wrote and edited the independent film Frownland (2007). He is a frequent collaborator of the Safdie brothers, best known for being a co-writer and co-editor on the films Good Time (2017), Uncut Gems (2019), and Marty Supreme (2025). For the latter, he was nominated for Best Picture, Best Original Screenplay, and Best Editing at the 98th Academy Awards.