Sonia Olschanezky (25 December 1923 – 6 July 1944) was a member of the French Resistance and the Special Operations Executive during World War II.
Olschanezky was a member of the SOE's Juggler circuit in occupied France where she operated as a courier until arrested by the Gestapo and was subsequently executed at the Natzweiler-Struthof concentration camp.