Julienne Marie Louise Aisner (née Simart; 30 December 1899 – 15 February 1947), code named Clair, was an agent in France of the United Kingdom's clandestine Special Operations Executive (SOE) organization during World War II. The purpose of SOE was to conduct espionage, sabotage, and reconnaissance in countries occupied by the Axis powers, especially Nazi Germany. SOE agents allied themselves with resistance groups and supplied them with weapons and equipment parachuted in from England.