Ivan Klimentyevich Malgerb (1867, 1938) was a renowned Russian architect who held the position of city architect in Feodosia (1893, 1896) and Yekaterinodar (since 1896). In 1935, he became a member of the Union of Architects of the USSR.

Born in Kyiv to French subjects Klemens and Bronislava Malgerb, he was given the name Ivan-Augustin at birth. His father died in 1871. After graduating from the Kyiv Real School, he enrolled in the Institute of Civil Engineers in St. Petersburg in 1881, graduating in 1888 with the title of engineer, allowing him to engage in civil construction and road works. After that, Malgerb accepted Russian citizenship.

As a student, he interned in Odessa, participating in the construction of the opera house designed by Austrian architects F. Fellner and H. Helmer, completed in 1887. In 1889, he became an assistant engineer to architect A. I. Bernardazzi in Odessa, where he participated in the design and construction of the merchant assembly. In 1893, Malgerb was appointed city architect in Feodosia.

From 1896, he worked as the city architect of Yekaterinodar, where he created the project for the city public bank building, constructed in 1900. A significant part of his work was related to the construction of churches. In Yekaterinodar, three temples were built according to his designs: St. Catherine's, Trinity, and Assumption. He also designed churches in the Kuban stanitsas. For more than three years, Malgerb oversaw the construction of the diocesan women's school building, completed in 1901, and later added symmetrical extensions to it.

After seven years of work in Yekaterinodar, in 1903, Malgerb became a 'free artist.' His projects included a wooden club in the city garden (1909), the Armenian charitable society building (1911), and a commercial school (1913). He also built a school in the stanitsa of Bryukhovetskaya and a church in the stanitsa of Novodzherelevskaya (1906), as well as developed a restoration project for the Intercession Church in Tamani.

After the revolution, Malgerb worked for a time in the Stavropol zemstvo and the revolutionary committee in Sochi. Returning to Yekaterinodar in 1920, he resumed civil construction and lectured at the Krasnodar Engineering and Construction Institute.

In the 1930s, when the destruction of churches began, Malgerb was invited to participate in this process, which he perceived as mockery, considering his contribution to the construction of temples. He refused to dismantle the Cathedral of Catherine, explaining that its masonry was so strong that it would not be possible to preserve whole bricks during disassembly. Thanks to his authority, the cathedral was not destroyed and was used as a storage facility.

In 1929, Malgerb became the architect of the Kuban Agricultural Institute, where he built the main building and dormitory, as well as supervised the installation of a high-voltage line. In 1937, he was appointed head of the construction of the institute's complex of buildings, but due to illness, he could not complete the work.

Ivan Malgerb died in 1938 and was buried at the All Saints Cemetery in Krasnodar.