Barbara Ruszczyc was born in Vilnius, Poland on 18 September 1928. She was the daughter of Regina Rouck and renowned painter Ferdynand Ruszczyc. Ruszczyc's father died in 1936 when she was eight years old. Her mother died three years later. The youngest of six children, Ruszczyc went to live with her older sister Janina, who had to drop out of Warsaw University in 1939 to care for her dying mother as well as her brothers and sisters.[2]
In 1939, during the beginning of World War II, Soviet troops attacked Poland and occupied Vilnius, where Ruszczyc and her family were living. They fled to their country estate in Bohdanow, Belarus. The Soviets eventually took over the estate in Bohdanow and later destroyed their home in 1944. Ruszczyc and her siblings were forced to move often during the war and were separated from their older sister Janina when she was imprisoned by the Germans.[2]
After the war, Ruszczyc moved to Warsaw where her oldest sister Janina was living and working as an art historian at the National Museum in Warsaw. Ruszczyc continued her education in Warsaw where she graduated from secondary school in 1950. She then enrolled at Warsaw University and also began working at the museum in 1949, initially as a guide and later in the Department of Ancient Art. At the university, she studied Mediterranean archaeology with a primary focus on Ancient Egypt and the Near East. Ruszczyc continued her studies at the university after graduation and earned a master's degree in Egyptian archeology in 1955. She continued her studies and her work at the museum and was granted her PhD from Warsaw University in 1972. Her doctoral advisor was Professor Kazimierz Michalowski.[2]