In Line of Duty is a 1931 American Western film directed by Bert Glennon and starring Sue Carol, Noah Beery and Francis McDonald.

It was one of the earliest releases of Trem Carr's Monogram Pictures.

[1] It is now considered a lost film.

A Canadian Mountie officer pursuing a fugitive from the law, is left in a moral conundrum when the fugitive saves his life.

This 1930s Western film–related article is a stub.