Église Saint-Jean-Baptiste de Wavre, Gothic church in Wavre, Belgium.

The Église Saint-Jean-Baptiste is a late-Gothic Brabantine church on a Latin-cross plan, built of ferruginous sandstone from Limal and Ottenburg, with white Gobertange limestone for the west porch. Its brick tower, banded with white limestone, is flanked by seven-segment buttresses and pierced by paired pointed windows; the date 1617 stands between the first-floor windows. The nave columns have cylindrical shafts on octagonal bases, and the choir, rebuilt in 1718, uses colder grey limestone.

Construction of the church started around 1470 using local sandstone commissioned by Affligem Abbey. The building underwent several reconstructions following fires that occurred in the 16th and early 17th centuries, which led to structural reinforcements.

The church keeps a relic of John the Baptist, its patron, and the deanery beside it was built by Affligem Abbey in 1743-1745 with Gobertange limestone like the facade. The carillon of 50 bells, inaugurated in 1954 and completed in 2003, plays twice a week during the Wednesday and Saturday markets, between 11 and 12.

The church stands between Place Cardinal Mercier and Place du Pastorat in Wavre's centre. The carillon is played at public concerts twice a week during the markets, on Wednesday and Saturday between 11 a.m. and noon. The cannonball from 1815 sits about four metres up on a pillar of the right aisle, so look upward as you walk along it.

A French cannonball from 18 June 1815, the day of the Battle of Waterloo, is lodged about four metres up in a pier of the right side aisle. The church was caught in the fighting at Wavre that same day; the ball is still there, with no plaque.