Dingus McDuck, nicknamed "Dirty," is a fictional character of the Scrooge McDuck universe. He was a descedant of Captain Hugh "Seafoam" McDuck and younger brother of Quagmire McDuck. He was a coal miner in Glasgow, Scotland. He married fellow coal miner Molly Mallard and became the father of three sons:

Through his sons he is the paternal grandfather of Rumpus McFowl, Scrooge McDuck, Matilda McDuck, Hortense McDuck and Gideon McDuck, a great-grandfather of Donald Duck and Della Thelma Duck and great-great-grandfather to Huey, Dewey and Louie.