Sir Ronald Harwood CBE FRSL (né Horwitz; 9 November 1934 – 8 September 2020) was a South African-born British author, playwright, and screenwriter, best known for his plays for the British stage as well as the screenplays for The Dresser (for which he was nominated for an Oscar) and The Pianist, for which he won the 2003 Academy Award for Best Adapted Screenplay. He was nominated for the Best Adapted Screenplay Oscar for The Diving Bell and the Butterfly (2007).