Leo Hönigsberg (Croatian: Lavoslav Hoenigsberg, pronounced [lâʋoslaʋ xěniɡzberg]; born in 1861, died in 1911) was a famous Croatian architect and co-owner of the architecture studio Hönigsberg & Deutsch.

[2] Hönigsberg was born in Zagreb, Austro-Hungarian Monarchy, to a Croatian-Jewish family.

[3][4][5][6] He studied in Vienna at the Technische Hochschule (today the Vienna University of Technology) under Heinrich von Ferstel where he graduated in 1883.

[7] Hönigsberg trained at the studios of Ludwig Tischler and Anton Krones.

In 1887 Hönigsberg returned to Zagreb where he worked with Julio Deutsch, at Kuno Waidmann's studio on the recommendation of Hermann Helmer.