The Rosary Catholic Church, formally known as the Church of Our Lady of the Rosary, is a prominent Roman Catholic parish church located at the corner of Henry and Park Streets in Port of Spain, Trinidad. It serves as a significant spiritual and community center within the Archdiocese of Port of Spain.

The church's history is deeply connected to the development of Port of Spain. The original structure on the site was a wooden chapel built in the late 18th century, established to serve the growing Catholic population of the city. The present stone church building was constructed in the early 20th century, with its cornerstone laid in 1913.

The architectural style of the Rosary Church reflects a blend of influences, incorporating elements of Gothic Revival design. Its notable features include a distinctive bell tower and a vaulted interior. The church is dedicated to Our Lady of the Rosary, a title of the Blessed Virgin Mary associated with the Rosary prayer devotion, which is central to Catholic tradition.

Throughout its history, the Rosary Church has been an active participant in the social and religious life of Trinidad. It has been associated with various Catholic organizations and has played a role in the island's educational and charitable endeavors. The parish has been served by several religious orders over the decades.

The church remains an active place of worship, holding regular Masses and sacraments. It stands as a historical landmark in the capital city, representing the enduring presence and cultural contribution of the Catholic faith in Trinidad and Tobago. Its location in central Port of Spain makes it a recognizable feature of the urban landscape.