Dendermonde Abbey, Benedictine monastery in Dendermonde, Belgium

Dendermonde Abbey is a Benedictine monastery in Dendermonde, Belgium. Its red-brick complex has two tall towers with steep slate roofs and pointed-arch windows, a gabled central section, and a lower wing with rectangular windows framed in pale stone. The abbey church, built in 1902 to plans by August Van Assche, was consecrated on 19 August 1902 by Ghent bishop Antoon Stillemans. The convent buildings were rebuilt in Flemish Neo-Renaissance style by Ghent architect Valentin Vaerwyck after a 1914 fire.

Dom Veremundus D'Haens, one of the last monks of Affligem Abbey after its suppression in 1796, bought the former Capuchin house in Dendermonde in 1837 and settled there with his first novice. In 1841 the community was recognised as the continuation of the 12th-century Affligem foundation, and in 1850 it joined the Cassinese Congregation. Monks from Dendermonde repopulated Affligem in 1870.

The library holds religious manuscripts and documents that show how Belgian monastic communities lived and worked across centuries. These collections offer insight into the daily practices and spiritual routines that shaped this part of Flanders.

The abbey church remains open for public worship, allowing visitors to participate in religious services held there. The entire complex received protected monument status in 2003, ensuring its preservation and availability for future visits.

A fire in 1914 destroyed most original buildings except the church, forcing the complete rebuilding of the monastery complex. This reconstruction gave the opportunity to redesign the complex in modern style and adapt it to the needs of the time.