Monmouthshire was a county constituency of the House of Commons of Parliament of England from 1536 until 1707, of the Parliament of Great Britain from 1707 to 1801, and of the Parliament of the United Kingdom from 1801 to 1885. It elected two Members of Parliament (MPs). In 1885 the Monmouthshire constituency was divided to create North Monmouthshire, South Monmouthshire and West Monmouthshire.