The A174 is a major road in North Yorkshire, England. It runs from the A19 road at Thornaby-on-Tees, across South Teesside and down the Yorkshire Coast to Whitby. The A174 is the coastal route between Teesside and Whitby; the alternative road, the A171, is described as being the moorland route.

North Yorkshire is a ceremonial county in the Yorkshire and the Humber and North East regions of England. It borders County Durham to the north, the North Sea to the east, the East Riding of Yorkshire to the south-east, South Yorkshire to the south, West Yorkshire to the south-west, and Cumbria and Lancashire to the west. Northallerton is the county town.