The coat of arms shows a bishop, a goose and a bell. The bishop is Saint Liudger, the first bishop of Münster. The goose is from a popular story about Liudger finding water during a drought. The bells of Lüdinghausen were said to chime by themselves, whenever Liudger entered the town. The left side is from the former coat of arms of the old district Lüdinghausen, while the right side comes from the old district Coesfeld. The coat of arms were granted in 1979.