Hanging flag of the municipality of <a href="https://de.wikipedia.org/wiki/Category:Roetgen" class="extiw" title="de:Category:Roetgen">Roetgen</a>
<bdi><a href="https://www.wikidata.org/wiki/Q22952627" class="extiw" title="d:Q22952627"><span title="German painter, graphic and book designer">Walther Bergmann</span></a>
</bdi>
granted on 21 March 1973
<a rel="nofollow" class="external text" href="https://www.roetgen.de/wp-content/uploads/2021/10/Hauptsatzung.pdf">Hauptsatzung der Gemeinde Roetgen</a>