Caithness and Sutherland was a county constituency of the House of Commons of the Parliament of the United Kingdom from 1918 to 1997. It elected one Member of Parliament (MP) by the first past the post system of election.

Sutherland was a Scottish constituency of the House of Commons of the Parliament of Great Britain from 1708 to 1801 and of the Parliament of the United Kingdom from 1801 to 1918.