Sir Ronald Harwood, (born Ronald Horwitz; 9 November 1934 – 8 September 2020) was a South African-born British author, playwright and screenwriter. He was known for his screenplays "The Dresser" and "The Pianist". He won the 2003 Academy Award for Best Adapted Screenplay. He also wrote the screenplay for "The Diving Bell and the Butterfly" (2007).