This category brings together articles about the ecclesiastical-administrative structure of the Russian Orthodox Church in the territory of Nizhny Novgorod Oblast — the Nizhny Novgorod and Arzamas Diocese, as well as the churches, monasteries, historical figures, and institutions connected to it. The diocese covers an extensive region with a rich Orthodox history, part of which is formed by such significant sites as the Makaryevsky Monastery on the Volga and the Karpovskaya Church.
Among the category's figures are saints and church leaders whose lives were closely tied to the Nizhny Novgorod land: Seraphim of Sarov and Agafya Melgunova, the founder of the Diveyevo Convent. Also represented here are the diocese's charitable institutions and information about its place within the structure of the Nizhny Novgorod Metropolis, established in 2012.