Trapped in the Sky (aka Army Spy and Sabotage) is a 1939 American thriller film directed by Lewis D. Collins and produced by Larry Darmour for Columbia Pictures.

The plot device of a "noiseless" or stealthy aircraft is a familiar theme in aviation films of the period, including The Sky Ranger (1921), The Silent Flier (1926) and Eagle of the Night (1928).

When William Fornay (C. Henry Gordon), a foreign agent, offers him three times the army's price, Fielding decides to sabotage the government tests, thus enabling him to sell his patent to the highest bidder.

After the initial test flight ends in a crash and the death of its pilot, Lieutenant Gray (Regis Toomey), United States Army Air Corps flyer Major Roston (Jack Holt) begins to suspect sabotage.

The working titles of Army Spy and Sabotage reflected a heightened atmosphere of international intrigue in the immediate period before World War II.