Nidderdale was a rural district in the West Riding of Yorkshire from 1938 to 1974.
It was created from the combination of most of the disbanded rural districts of Great Ouseburn and Knaresborough.
[1] The district covered villages in the lower valley of the River Nidd between Hampsthwaite and York.
Despite its name it included only a small part of Nidderdale, most of which was in Ripon and Pateley Bridge Rural District.
It bordered Harrogate and Knaresborough urban districts on their west, north and east.