Alexander Antonovich Kyui (1824, 1909) was an architect and academician of the Imperial Academy of Arts, as well as an actual state councilor. He was the brother of composer Caesar Antonovich Kyui.

He was born in Vilno. His father, Anton Leonardovich Kyui, was French and served in Napoleon's army. After being wounded near Smolensk in 1812, he was captured and remained in Russia. Alexander's mother, Yulia Lavrentyevna, was the daughter of the famous engineer and architect Lavrenty Gutsevich.

Kyui studied at the Imperial Academy of Arts from 1841 to 1853, where his mentor was K. A. Ton. From 1848, he worked under the guidance of Professor N. E. Efimov on the construction of the New Hermitage, the buildings of the Ministry of State Properties, and the reconstruction of the building of the Petersburg Duma. In 1853, he received the title of non-class artist, and in 1859 he was recognized as an academician.

From 1854, Kyui worked in Voronezh, where he became the architect of the Voronezh Mikhailovsky Cadet Corps and the city architect from 1859, and from 1870 to 1906, the provincial architect. He oversaw the construction of officer wings and soldiers' barracks on Gruzovaya Street, and also led the work on creating the monument to Peter I in Voronezh.

Since 1868, Kyui was involved in designing the water supply in Voronezh and all above-ground structures. He was one of the authors of the monument to A. V. Koltsov, creating the overall design of the bust, which was then executed by A. Triskorni, and supervised the installation of the monument and the planning of the square. He also worked on the reconstruction and expansion of the Annunciation Cathedral in Mitrofanovsky Monastery and designed the building of the Voronezh Theological Seminary.

Kyui developed projects for several churches, including the Varvarinskaya Church in the women's monastery near the village of Somovka, the Archangel Church in the village of Golyshevka, the cathedral of the Mary Magdalene Women's Monastery in the Oryol province, and the cathedral in the Nikolai-Tikhvin Monastery.

The most significant building by Kyui was the Vladimir Cathedral in Voronezh.

For 30 years, he was the director of the Alexandrinsky Children's Shelter and the vice-director of the Voronezh branch of the Imperial Russian Musical Society. He was also elected as a member of the city duma in 1893 and 1901.

Kyui served as the Voronezh provincial architect for 36 years and from 1892 was an actual state councilor. He was awarded the orders of St. Stanislaus 2nd class, St. Anna 2nd class, and St. Vladimir 3rd class.

Alexander Antonovich Kyui passed away in Voronezh on March 9, 1909, and was buried in the German/Chuguyev cemetery.