Saint Martin's Church (Dutch: Sint-Maartenskerk) is the main Roman Catholic church and one of the principal Gothic monuments of Kortrijk (Courtrai), West Flanders, Belgium.

The church is dedicated to Saint Martin of Tours.

The first Gothic Saint Martin's Church was burned down after the Battle of Rozenbeke.

The current bell tower dates from the 19th century, a rebuilding after a fire in 1862 ruined the choir and major parts of the roof and tower.

The organ, dating to 1888, is a major work of Pierre Schyven.