Antonina Bąk was born on 31 March 1909. During World War II, she lived in the village of Jurowce (Podkarpackie Voivodeship). She provided food and other basic goods to the three Jewish Iwler brothers, Jehuda, Zvi and Israel, who were hiding in the area. The men survived the German occupation. After the war, they emigrated from Poland.

Antonina Bąk was awarded the title of Righteous Among the Nations in 1990.