Our Lady of the Holy Rosary Cathedral, Roman Catholic cathedral in Chattogram, Bangladesh

Our Lady of the Holy Rosary Cathedral stands in central Chittagong, about a kilometre east of Chittagong railway station. Its nave is roughly 40 metres long and 10 metres wide, flanked on the north and south by open columned porticoes with lean-to roofs, above which round windows light the interior. A square tower with a slender octagonal lantern, spire and encircling balcony faces the nave from the east, and the interior is a single-hall church.

Construction began in 1843 during British rule, bringing European architectural style to the region. Major renovation work in 1933 strengthened the structure and updated the building for continued use by the Catholic community.

The cathedral is also a parish church, and the Parish of Our Lady of the Holy Rosary counts about 5,000 Catholics. Its grounds sit in the same street block as St. Placid's School and College, with St. Scholastica's Girls' School & College in the next block east.

The cathedral is located on Bandel Road in the Patharghata area and is accessible by foot or local transport. Visitors should be respectful during prayer times and religious services, and modest clothing is appreciated when entering the building.

The square tower in front of the nave has a slender octagonal top with a pointed spire and a surrounding balcony that recalls a minaret. The first churches in Chittagong were built by the Portuguese in 1600, but the present building dates from 1843. The parish counts about 5,000 Catholics.