Vasily Antonovich Kosyakov (Russian: Василий Антонович Косяков; 1862– 5 September 1921) was a Russian Imperial architect and a specialist of the Neo-Russian and Neo-Byzantine architecture in the Russian Empire.^[1][2] He was the author of the projects of St Vladimir's Cathedral, Astrakhan [ru], the Church of Our Lady the Merciful, Saint Petersburg, Kronstadt Naval Cathedral, St. Nicholas Naval Cathedral in Alexander III Harbour in Libava (now Karosta, Liepaja), the Church of the Dormition of the Mother of God, Saint Petersburg, and others.

You can help expand this article with text translated from the corresponding article in Russian. (December 2015) Click [show] for important translation instructions. View a machine-translated version of the Russian article. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Russian Wikipedia article at [[:ru:Косяков, Василий Антонович]]; see its history for attribution. You may also add the template {{Translated|ru|Косяков, Василий Антонович}} to the talk page. For more guidance, see Wikipedia:Translation.

He is buried at Novodevichy Cemetery, in Saint Petersburg.