Jerzy Iwanow-Szajnowicz, Greek-Polish swimmer and water polo player (born 1911)

Jerzy Iwanow-Szajnowicz was a Polish-Greek athlete who fought as a saboteur in the Greek Resistance during World War II and was executed by the Germans.

January 4 is the fourth day of the year in the Gregorian calendar; 361 days remain until the end of the year.