North Ayrshire was a county constituency of the House of Commons of the Parliament of the United Kingdom from 1868 until 1918. It returned one Member of Parliament (MP), using the first-past-the-post voting system.

Ardrossan is a town on the North Ayrshire coast in southwestern Scotland. The town has a population of 10,670 and forms part of a conurbation with Saltcoats and Stevenston known as the 'Three Towns'. Ardrossan is located on the east shore of the Firth of Clyde.