Squadron Leader X is a 1943 British World War II spy drama directed by Lance Comfort and starring Eric Portman and Ann Dvorak.

Erich Kohler (Eric Portman), a crack Luftwaffe pilot who speaks fluent English, is ordered by his superior, Inspector Siegel (Frederick Richter), to drop a "stick" of bombs on the Belgian city of Ghent.

Kohler then takes refuge with the Krohns (Martin Miller and Beatrice Varley), a couple who are reluctant Nazi agents due to threats being made of harm to family members in Germany if they fail to co-operate.

Film historian Bertil Skogsberg in Wings on the Screen: A Pictorial History of Air Movies (1987) called some sequences "fairly exciting but otherwise (an) uninteresting thriller.

[6] Film historians in the 21st century have also evinced a major increase in interest in Comfort's directorial career and Squadron Leader X is a vital missing piece of his filmography.