Roberto Giulio Mongeri was an Ottoman Empire-born Italian-descent architect. He designed a number of notable buildings in Istanbul during the late period of the Ottoman Empire and in Ankara and other cities of Turkey in the early years of the Turkish Republic as a member of the First national architectural movement. He taught architecture at the School of Fine Arts in Istanbul.

The First national architectural movement, also referred to in Turkey as the National architectural Renaissance, or Turkish Neoclassical architecture, was a period of Turkish architecture that was most prevalent between 1908 and 1930 but continued until the end of the 1930s. Inspired by Ottomanism, the movement sought to capture classical elements of Ottoman and Seljuk architecture and use them in the construction of modern buildings. Despite the style focusing on Ottoman aspects, it was most prevalent during the first decade of the Republic of Turkey.