Roza Klein was born in 1923 in the village Grebenivke. She comes from a highly educated family. Her mother was born in the village Sakhnovtsy and her father was born in the village Hrybenynka and worked as a carpenter. Klein had four siblings. Roza received her education at a Yiddish school where she studied for three grades and which in 1938 was turned into a Russian school with the same teachers now teaching in Russian. Since Klein's father was a specialist, he was evacuated to Omsk (Central Asia) during the war, and the family spent the duration of the war there.