Lavoslav Singer (1866–1942) was a Croatian industrialist notable for his role in the development of Bjelovar.

Upon completion of his education he was engaged in industrial revolution that led to the development of factories in Bjelovar.

Singer developed the milling industry in Bjelovar, but was also active in the development of coal mining, gravel extraction from the river Drava and its shipment to the big cities, and has also extracted gold from Drava.

Being Jews, during World War II, Singer and his wife were forced to wear yellow star of David on their clothes.

[5] In 1942 Singer and his wife were arrested and deported to Auschwitz concentration camp where they were killed during the Holocaust.