Serafimo-Diveevsky Monastery (Saint Seraphim-Diveyevo Monastery or Holy Trinity-Saint Seraphim-Diveyevo Monastery) is a monastery of nuns (convent) in Diveyevo settlement which is about 200 km from Nizhny Novgorod. It is situated in a region considered to have immense spiritual significance. The convent is famous because Saint Seraphim of Sarov served as Staretz (Elder) for the nuns of this monastery, though he only travelled to the convent once during his lifetime: he was a monk at the nearby monastery of Sarov. After the fall of communism, his relics, which had been feared lost, were discovered in the storeroom of a "museum of atheism" in Saint Petersburg and solemnly transferred to the Seraphim-Diveyevo monastery, which has come to be named after him.

The new katholikon was built in 1907-1916 to designs by Anatoly Antonov. The monastery started with the Church of Our Lady of Kazan (Kazanskaya), built in 1773-1780. Saint Seraphim blessed the construction of two churches adjoined to Kazanskaya: The Church of the Nativity of Christ (1829) and the Church of the Nativity of Theotokos (1830). The large Trinity Cathedral with its bell tower was constructed in 1865-1875. The Office of the Hegumenia (Abbess) with it Mary Magdalen House Church and the Alexander Nevsky Trapeza Church were built in the end of the 19th century. Finally. The Transfiguration Cathedral was built in 1907-1916. In 2003-2004 there were significant restoration works in the Monastery celebrating 250 year anniversary of Saint Seraphim. This sacral place is well known to Christians in Russia and beyond. Diveyevo is visited by numerous pilgrims from around the world.