Anthonis van Obbergen (Antonius, Anthonis, Anthony, Antonie, Anton - Obberghen, Oberberg, Opbergen) (1543 in Mechelen – 1611 in Danzig (Gdańsk)) was a Flemish architect and fortifications engineer. After studying masonry in Mechelen and completing a tour to study fortification work in Germany, he initially gained experience working on the fortifications of Antwerp (1567–71).[1] He later worked in Denmark and Poland where he designed fortifications as well as civilian homes.[2][3]