Under Cover is a lost[1] 1916 American silent drama film directed by Robert G. Vignola, written by Doty Hobart and Roi Cooper Megrue, and starring Hazel Dawn, Owen Moore, William Courtleigh Jr., Ethel Fleming, Frank Losee, and Ida Darling.

It was released on July 20, 1916, by Paramount Pictures.

Ethel Cartwright, a woman just back from a trip to Paris, is called upon by U.S. government customs inspectors to help determine if a man she met in Paris possesses a valuable necklace.

The story ends with a confrontation between the customs officers and the suspect.

[4] A one-hour radio adaptation was presented on Lux Radio Theatre on April 27, 1936, starring Richard Barthelmess and Sally Eilers.