Leib Weissberg (January 9, 1893 – 1942) was a Slavonski Brod rabbi who was killed during the Holocaust.
He was married to Adela (née Taubes) Weissberg with whom he had two sons: Samuel (born on April 25, 1933, in Brod na Savi) and Saadia (born on December 28, 1936, in Slavonski Brod).
Weissberg was educated at the rabbinical seminary "Israelitisch-theologische Lehranstalt Vienna".
Weissberg was a rabbi of the Jewish Community of Slavonski Brod until World War II.
Weissberg and his family were deported to Jasenovac concentration camp where they all were killed in 1942.