This study summarizes information regarding features of religious and church-religious self-determination of citizens of Ukraine for the period 2000-2021. Ukraine’s Western region is traditionally characterized by a high level of religiosity, while the South and East of Ukraine are the least religious. In recent years, the proportion of citizens who do not identify themselves with any of the religions has increased. There is a significant difference between the level of declared religiosity and identification with a particular religious community. As a result of the military events in the East of Ukraine and the war with Russia, the number of believers and Orthodox churches of the Moscow Patriarchate has significantly decreased, while the...