Drongen Abbey, or the Old Abbey, Drongen (Dutch: Abdij van Drongen, Oude Abdij van Drongen), is a monastic complex on the River Leie in Drongen, a part of the city of Ghent in East Flanders, Belgium.
Formerly a Premonstratensian abbey, since 1837 the premises have belonged to the Jesuits. In 1998 the whole property, including the garden, was declared a protected monument.