There is one place named Mount Duff in Canada.
All places in the world called "Mount Duff".
Wellington (4)
Windsor (4)
Borden (3)
Princeton (3)
Westport (3)
Milton (3)
Richmond (3)
Benton (3)
Saint Andrews (3)
Selkirk (3)
Tracadie (3)
Kingston (3)
Victoria (3)
Havelock (3)
Centreville (3)
Sidney (3)
Badger (2)
Burwash (2)
Clyde River (2)
Elgin (2)
Griffin (2)
Lethbridge (2)
Murray Harbour (2)
Redwater (2)
Saint-Paul (2)
Stratford (2)
Belmont (2)
Cartwright (2)
Deer (2)
Fort Hope (2)