Hugo Ernst Bleicher (9 August 1899 - August 1982) was a senior non-commissioned officer of Nazi Germany's Abwehr who worked against French Resistance in German-occupied France.
Bleicher was born in Tettnang. He served as a private soldier in the First World War in the pioneer gas corps and was captured near the Somme. He was held as a Prisoner of War in 165 POW Camp near Abbéville and succeeded in escaping four times, although he was never able to return to the German lines. He is misreported as having been taken prisoner by the British in Belgium as a spy when wearing a British uniform. After the war he became a businessman but was recruited into the Abwehr during the Second World War because of his knowledge of French and Spanish. However, he never rose above the rank of Feldwebel.
Bleicher was ruthless in his pursuit of anyone in France who opposed German domination. He disabled the Franco-Polish "Interallié" network, and captured both Polish Air Force Captain Roman Czerniawski and some of his headquarters staff, one of whom was Mathilde Carré, who had contacts with the Vichy 2nd Bureau. She reportedly became Bleicher's lover, betrayed everyone she knew in the network, and agreed to act as an Abwehr agent. Subsequently, she changed sides again and betrayed her dealings with the Abwehr to MI5, who used her radio link for deception purposes for a period in conjunction with the Poles and the SIS and then imprisoned her when her usefulness had ceased, until the end of the war.