A number of mountains in the British Isles have the name Cairn Hill
Cairn Hill (Antarctica) Cairn Hill, Northumberland, one of the Cheviot Hills, England Carn Clonhugh in County Longford, Ireland which is also known as Cairn/Corn Hill Cairn Hill transmission site radio and television transmission Cairn Hill, Scotland, Scotland, see Cairnryan#History
Other uses Cairn Hill mine, an iron ore mine in Australia