Pont-à-Celles is a Walloon municipality located in the Belgian province of Hainaut. On January 1, 2006, Pont-à-Celles had a total population of 16,292. The total area is 55.73 km² which gives a population density of 292 inhabitants per km².
The following villages are part of the municipality of Pont-à-Celles: Buzet, Liberchies, Luttre, Obaix, Pont-à-Celles (village that gave its name to the municipality), Thimeon, Viesville.
Pont-à-Celles draws its name from Latin Cella, meaning room or cell of monk, probably because of the presence of the monastery founded in the 7th century, by Saint Amand (apostle of Belgium). The jurisdiction on which this primitive monastery was established, and then the priory of the Park, was called Celles, and later Pont-à-Celles.
The name of Pont-à-Celles appears for the first time during the 16th century, when the monks of the Park built a bridge over the Pieton river near the church. The parishioners of Luttre and Hairiamont then had to cross the bridge for going to service (hence bridge to Celles, or Pont-à-Celles in French). Gradually, this name extended to all the parish whose territory covered six seigniories.