Barnard Castle (UK Parliament constituency)

Barnard Castle was a county constituency centred on the town of Barnard Castle in County Durham, which returned one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom.

To the west of the constituency (moving from south to north) were the Westmorland divisions of Appleby and Kendal.

The constituency was expanded northwards, absorbing the western part of the abolished North West Durham seat (Lanchester).

Crook and Tow Law were added to the new constituency of Spennymoor and a small area in the east was transferred to Bishop Auckland.

In 1950 the Barnard Castle urban and rural districts were included in the Bishop Auckland constituency.