There is one place named Dennis Island in Canada.
All places in the world called "Dennis Island".
Windsor (4)
Wellington (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)
Armstrong (2)
Buffalo (2)
Churchill (2)
Duvernay (2)
Granville (2)
Lancaster (2)
Mountain View (2)
Read Island (2)
Saint Marys (2)
Stirling (2)
Watson (2)
Bedford (2)
Canyon City (2)
Cowley (2)