Sint-Antoniuskerk, Protected religious monument in Kortrijk, Belgium.

Sint-Antoniuskerk is a red-brick church in Romanesque Revival style, built in 1873 to a design by François Hennebique. Its cream-and-grey columns carry green and gold geometric bands, carved capitals and small statues. The interior was painted in neo-Gothic style by Willem Deumens sr. in 1894–1895, and the high altar, sculpted in white French stone by Charles Delbaere in 1882–1885, stands below a large arched mosaic of the Adoration of the Lamb.

The first stone of the Kortrijk Passionist monastery was consecrated and laid on 8 June 1873 by Mgr. Faict, Bishop of Bruges. Monastery and church, dedicated to Saint Anthony, were completed within a year. The church was built in Romanesque Revival style to a design by architect François Hennebique. In 1952 a burial chapel by architect Emiel Haesbrouck was added, and in 1995 a new building was attached to the monastery.

The church is dedicated to Anthony of Padua, whose feast day is celebrated solemnly every 13 June. In the early 1950s a burial chapel was added for the Passionist Brother Isidoor; when his remains were moved there in 1952, more than 100,000 visitors came to Kortrijk. The chapel's stained glass by Michel De Loore shows scenes from his life.

The church stands in the Veemarktbuurt, around the corner from the Veldstraat and the Wandelweg. Behind the church is the Lourdes grotto, consecrated on 11 February 1908, with its wall chapels of the Seven Sorrows of Mary; the tomb chapel of Brother Isidoor, added in 1952, is attached to the church. The patronal feast of Saint Anthony of Padua is celebrated on 13 June.

The tomb chapel added in 1952 to the church was designed by Kortrijk architect Emiel Haesbrouck for the Passionist Brother Isidoor. When his remains were moved there from Sint-Janskerkhof, over 100,000 visitors came to Kortrijk. The marble tomb was cut from stone of the French Massif Central, and Michel De Loore of Ghent designed the chapel windows showing scenes from Isidoor's life.