达格默塞伦是瑞士的城镇，位于该国北部，由琉森州负责管辖，面积23.9平方公里，海拔高度481米，2010年人口4,973，其中八成居民信奉罗马天主教。

Dagmersellen is a municipality in the district of Willisau in the canton of Lucerne in Switzerland.

On 1 January 2006, the former municipalities of Buchs and Uffikon were merged into Dagmersellen, causing a one-third increase in its population and a marked increase in its territorial area.