Église Saint-Léger de Guebwiller, Romanesque Catholic parish church in Guebwiller, France

Saint-Léger is a five-aisled Romanesque church built of red Rothbach Vosges sandstone. Its west front has a full-width porch and a three-tiered portal whose tympanum shows Christ flanked by the Virgin and a bishop, probably Saint Leodegar. An octagonal crossing tower rises above the nave, and the south-west tower carries a clock.

A first church stood here around 800, replaced in the 11th century by a larger one with a bell tower porch. The present building was begun in 1182 under Abbot Conrad of Eschenbach and finished around 1200. The Romanesque apse was replaced by a Gothic five-eighth choir by 1580, when two outer aisles were added, making the church five-aisled. It was deconsecrated in 1794 and re-consecrated in 1831.

The south-west tower carries a German inscription, "Frei leben oder sterben / Das 3. Jahr der Freiheit 1791", beside the coats of arms of Gebweiler and Murbach. In the Valentine Chapel, storming ladders left behind by French troops after their retreat are kept in memory of the attack on the town on the night of 13 to 14 February 1445.

The church stands in Guebwiller's old upper town, in the Haut-Rhin department of Grand Est. Visitors enter through the porch that runs the full width of the west facade, open from the sides as in many Burgundian churches. The building is listed as a monument historique since 1842.

Above the entrance portal is a raised chapel designed in the Carolingian tradition that once served as a gallery where important church officials could observe services from a higher vantage point. This architectural feature reflects how the church was organized to accommodate different social roles during worship.