Holy Spirit Cathedral, Orthodox cathedral in Upper Town, Minsk, Belarus

The Holy Spirit Cathedral is a white Baroque church in Minsk's Upper Town, built 1633–1642 as a Bernardine convent church. Its facade has two tiered bell towers with dark spires; between them a mosaic of a gold-background figure fills an arched panel above the main doorway. The interior holds a three-tier iconostasis and the relics of Sophia Olelkovich Radziwill.

Built in 1633–1642 as the stone church of a Bernardine convent founded by Troki voivode Alexander Slushka, it was consecrated to the Nativity of the Virgin on 31 August 1687. After the 1835 fire the nuns left for Nesvizh in 1852, and in 1860 the site returned to the Orthodox Church. Monks from Slutsk brought the wonder-working Our Lady of Minsk icon in 1870, and the church became the Minsk diocese cathedral in 1961.

The cathedral is the mother church of the Belarusian Orthodox Church and holds the Our Lady of Minsk icon, dated to 1500, in its iconostasis. The incorrupt relics of Sophia Olelkovich Radziwill, granddaughter of Princess Anastasia Slutskaya, lie in a niche on the left side of the altar. A monument to Metropolitan Filaret was unveiled beside the church on 3 May 2022.

The cathedral stands in the Upper City, a short walk from Independence Square and the Svisloch. The main entrance is the dark arched doorway beneath the mosaic panel between the two bell towers. Visitors enter as worshippers do, so dress modestly and keep voices low; the relics of Sophia Olelkovich Radziwill lie in a niche left of the altar.

Two brick-lined entrances once led underground from the Bernardine monastery courtyard, each closed by massive iron doors. One passage ran toward the Svisloch River and was reached by a brick descent; the other led beneath the ground to the church and the monastery of the Bonifratres. Both belonged to the original 17th-century complex, not to the cathedral itself.