Aleksander Osipovich Bernardazzi (Russian: Александр Осипович Бернардацци, alternative spelling: Alexandr Bernardacci, Romanian: Alexandru Bernardazzi; July 2, 1831 – August 14, 1907) was a Russian architect best known for his work in Odessa and Chişinău.

The town had been almost completely built by his father, Giuseppe Marco Bernardazzi [ru], and uncle, who were originally Swiss from Pambio.

Very early Bernardazzi demonstrated artistic talent and was eventually sent to study in Moscow.

[3] It has been said that "the Odessa you see today is the work of this prodigious and talented architect".

In the mid-1880s he designed:[note 1] Bernardazzi designed a large number of residential buildings and mansions: By the 100th Anniversary of Odessa, Odessa city architect Bernardazzi led the work of the Technical Division of the Architectural Society and instructed the design and construction of a number of public buildings.