Chappaquiddick is a 2017 American drama film directed by John Curran and written by Taylor Allen and Andrew Logan. The film stars Jason Clarke as Massachusetts Senator Ted Kennedy and Kate Mara as Mary Jo Kopechne, with Ed Helms, Bruce Dern, Jim Gaffigan, Clancy Brown, and Olivia Thirlby in supporting roles. The plot details the 1969 Chappaquiddick incident, wherein Senator Kennedy drove his car into a lake, killing Kopechne, and the subsequent political and social ramifications.
Principal photography began in Boston in September 2016. The film premiered at the Gala Presentations section at the Toronto International Film Festival on September 10, 2017, and was released in the United States on April 6, 2018, by Entertainment Studios. It received generally positive reviews from critics, with praise for its balanced screenplay and Clarke's performance.