The coat of arms show two lions in the top part, in the left the silver lion of the city and the dukes of Heinsberg, in the right the black lion on yellow ground of the duchy of Jülich. The bottom part derives from the coat of arms of the former district Erkelenz, the fleur-de-lis from the city of Erkelenz represent the Maria-abbey in Aachen, and the blue flax flower in the middle remembers the old tradition of flax and linen trading in Erkelenz.