Opwijk (Dutch pronunciation: [ˈɔpʋɛik]) is a municipality located in the Belgian province of Flemish Brabant. The municipality comprises the towns of Mazenzele and Opwijk proper. On January 1, 2012, Opwijk had a total population of 13,990. The total area is 19.69 km² which gives a population density of 690 inhabitants per km².

• The church of Saint-Paul
• The monastery of the sisters of Saint-Vincentius a Pauo

• At the cemetery, against a red beech, a monument commemorates the fallen soldiers of World War I. Besides a lot of veterans are buried here.

• The garden of the notary house of Wijnants. Today the garden is part of a school. Only a few trees are left over, such as a beautiful weeping beech (fagus sylvatica Pendula).
• The garden of 'Temmershof'. In 2007 most of the park was destroyed, except a few trees such as a big horse chestnut (aesculus hippocastanum).

• The central park 'Hof ten Hemelrijk' or in English 'court of heaven' with lawn, a pond and trees. In 2018 a lime tree was planted as a peace tree for the commemoration of the end of World War I.
• The small 'Processiepark'. In this parks there is a tree circle of red beeches with two trees that fused together in a special way.

• Media related to Opwijk at Wikimedia Commons
• Official website - Available only in Dutch
• Heemkring Opwijk-Mazenzele - Available only in Dutch