The Martyrs of Gorkum were a group of 19 Dutch Catholic clerics, secular and religious, who were hanged on 9 July 1572 in the town of Brielle by militant Dutch Calvinists during the 16th-century religious wars—specifically, the Dutch Revolt against Spanish rule, which developed into the Eighty Years' War.

Brielle, also called Den Briel in Dutch and Brill in English, is a town and historic seaport in the western Netherlands, in the province of South Holland, on the north side of the island of Voorne-Putten, at the mouth of the New Maas. The former municipality covered an area of 31.14 km2 (12.02 sq mi) of which 3.59 km2 (1.39 sq mi) was water. In 2021 its population was 17,439.