Marie-Thérèse Le Chêne MBE CdG (born, April 20, 1890, Sedan, France) was an agent of the United Kingdom's clandestine organization, the Special Operations Executive (SOE), in France during the Second World War.
She was the oldest female SOE agent sent to France, serving there from October 31, 1942 until August 16, 1943.
She worked as a courier with the code name of Adele.
Her husband and brother-in-law were also SOE agents and she worked closely with them.