Petegem-aan-de-Leie is a village in the Belgian province of East Flanders and a borough of Deinze.

The village today forms a single urban core with that of Deinze itself, which is located just across the river.

Petegem-Binnen (Petegem-city) was located just south of the bridge over the Leie (Lys) to Deinze.

De Dries, where the roads from Gavere and Oudenaarde converged, served as the center of the village.

Until 1963 it was simply called Petegem, from that date the suffix -aan-de-Leie was added to the name to distinguish it with Petegem-aan-de-Schelde in the same province, 15 km south.

[3] Petegem-aan-de-Leie is located in Zandig Vlaanderen [nl] and in the valley of the Leie (Lys), at an altitude of 10–13 meters.