Plymouth was a parliamentary borough in Devon, which elected two members of parliament (MPs) to the House of Commons in 1298 and again from 1442 until 1918, when the borough was merged with the neighbouring Devonport and the combined area divided into three single-member constituencies.

Plymouth, Sutton was, from 1918 until 2010, a borough constituency represented in the House of Commons of the Parliament of the United Kingdom. It elected one Member of Parliament (MP) by the first past the post system of election.