Zygmunt Witymir Bieńkowski (2 May 1913 Warsaw – 15 August 1979) was a Polish pilot and a writer of many articles and poems.

303 Squadron RAF diary is held in the Polish Museum and Sikorski Institute in London.

[1] Trained as a pilot at Polish Air Force Academy in Dęblin, he did not fight in Poland in 1939, but was evacuated westwards, escaped to Romania, then to France and on 27 June 1940 arrived in England.

At that time he was also flying with 315 (Polish) Squadron and on 13 May 1943 was involved in combat with enemy fighters between 11.30 and 13.05.

He befriended some of the American pilots, who gave him the affectionate nickname "Bing Crosby", a play on his family name.

During the war, he flew 74 sorties, claiming one Bf 109 destroyed and a Fw 190 damaged.