Zofia Wanda Leśniowska (née Sikorska; 2 March 1912 – 4 July 1943) was the daughter of Lieutenant-General Władysław Sikorski.

[1] After World War II broke out, on 7 September 1939 Lt. Gen. Sikorski ordered her to organize a resistance movement.

[1] She was killed, together with her father and nine others, when their plane crashed into the sea 16 seconds after takeoff from Gibraltar Airport at 23:07 on 4 July 1943.

[2] It has been speculated that instead of dying in the crash, she was abducted and imprisoned in the Soviet camps near Moscow, and later in the interior of the country where she was allegedly seen by Polish officers, including special agent Tadeusz Kobyliński.

[3] Such speculations, however, remain in the realm of conspiracy theories, and as noted by Roman Wapiński in the Polish Biographical Dictionary, it is presumed Zofia died alongside her father in what was just an accident.