St. Patrick's Church, Catholic church in downtown St. John's, Canada.

St. Patrick's Church is a church building in downtown St. John's featuring Gothic Revival architecture with a single tower and colorful brickwork in distinct patterns. The interior displays wooden ceilings and the structure stands on elevated ground along Patrick Street.

The cornerstone of St. Patrick's Church was laid on September 17, 1855, by Bishop John T. Mullock, with clergy from Canada and the United States present. Work on the foundation began only in 1864, using stone from the Southside Hills, and stalled for a decade until more stone was donated in 1875. The church was completed and consecrated on August 28, 1881, and closed in 2022 after the archdiocese sold it to compensate abuse victims.

The church was designed by Irish architect J.J. McCarthy and built by local mason T. O'Brien, who used stone quarried from the Southside Hills. American financier Cyrus Field gave £1,000 toward construction costs. The building closed in 2022 after the archdiocese sold it to raise money to compensate victims of abuse.

The building sits on elevated ground at Patrick Street in the downtown area with views toward St. John's Harbor. The raised location and surrounding historic residential buildings make it straightforward to locate and accessible to walking tours of the downtown district.

From 1888 to 1959, this was the tallest structure in St. John's, defining the city's skyline for seven decades. This prominence gave the church a special role in the community's identity and visual history.