Rubin Dimitrov was born in the Bulgarian city of Russe and raised in the capital Sofia. He was a salesman and had some Jewish business partners, some of whom were good friends of his.
An antisemitic law came into force in 1941. Jews were no longer permitted to practice certain professions. Rubin Dimitrov provided food packages for some of his Jewish friends, who were conscripted to do forced labor in camps. He also took care of their families, as they had lost the men’s income.
On May 24, 1943, Jewish and non-Jewish Bulgarians protested in Sofia against the forced relocation of the Jewish population outside the capital. The police arrested hundreds of Jews. Dimitrov hid some of the Jewish demonstrators so they would not be arrested. When the next day he brought food to Jewish friends who had been arrested, he was beaten up by police officers. He nevertheless continued to help Jews until the antisemitic laws were repealed in 1944.
Dimitrov emigrated to Israel in 1962 and was honored by the Israeli Holocaust memorial Yad Vashem as Righteous Among the Nations in 1963.