Robert Reese Parrish was an American film director, editor and former child actor. He won an Academy Award for Best Film Editing for his work on Body and Soul (1947).

Undercover, also known as Undercover: How to Operate Behind Enemy Lines and How to Operate Behind Enemy Lines, is a 1943 Office of Strategic Services training film, directed by and featuring John Ford. It was edited by Ford's longtime collaborator Robert Parrish.