First Monday in October is a 1981 American comedy-drama film from Paramount Pictures, produced by Paul M. Heller and Martha Scott, directed by Ronald Neame, that is based on the 1978 play of the same name by Jerome Lawrence and Robert E. Lee. The film stars Walter Matthau (for which he was nominated for a Golden Globe Award for Best Actor – Motion Picture Musical or Comedy) and Jill Clayburgh (for which she was nominated for a Golden Globe Award for Best Actress – Motion Picture Musical or Comedy). The cast also co-stars Jan Sterling in her final feature film role.