| Church of St. Peter and St. Paul | |
| Native Name: | Dutch; Flemish: Sint-Petrus-en-Pauluskerk |
| Coordinates: | 51.23°N 2.922°W |
| Location: | Ostend |
| Country: | Belgium |
| Denomination: | Roman Catholic |
| Functional Status: | Active |
| Architectural Type: | Church |
| Style: | Neo-Gothic |
| Groundbreaking: | 1899 |
| Completed Date: | 1908 |
Sint-Petrus-en-Pauluskerk (Church of Saint Peter and Saint Paul) is a Roman Catholic church in Ostend, Belgium. The neo-Gothic building was constructed on the ashes of a previous church that occupied the site. King Leopold II enthusiastically supported a plan to build a new and more magnificent church. Construction started in 1899 and was completed and consecrated by Bishop Waffelaert on 31 August 1908. Its stained glass windows were destroyed during the two World Wars and were replaced by windows by Michiel Martens. The church is long and wide. Its spires are high.
The church was built in the neo-Gothic style according to plans by the architect Louis Delacenserie, who based his design on the Gothic Cologne Cathedral and the neo-Gothic Votivkirche in Vienna.