Duff may refer to: People. Duff (surname) Duff (given name) Duff (nickname) Karen Duffy, an actress, model, and former MTV VJ once known as "Duff" Duff Roman, on-air name of Canadian radio personality and executive David Mostoway (born 1938) Places. Duff, Indiana, United States, an unincorporated community. Duff, Nebraska, United States, an unincorporated community. Duff, Tennessee, United States, an unincorporated community. Duff, Saskatchewan, Canada, a village. Duff Hill, a mountain in County Wicklow, Ireland. Duff River, a river in County Sligo, Ireland.
https://en.wikipedia.org/wiki/Duff