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.

Plymouth Sutton covered parts of the city of Plymouth, in South West England, and was first contested at the 1918 general election. In a by-election in 1919, it became the second constituency in the UK (and the first in Great Britain) to elect a female MP: Nancy Astor became the first woman to take a seat in the House of Commons (the first female MP was the Sinn Féin member Constance Markievicz, who did not take her seat). Three of its MPs have been members of the Astor family. A more recent prominent MP was the flamboyant Conservative Alan Clark, who represented Plymouth Sutton from 1974 until 1992.

1918–1950: The County Borough of Plymouth wards of Charles, Compton, Friary, Laira, St Andrew, Sutton, and Vintry.

1950–1951: The County Borough of Plymouth wards of Charles, Compton, Crownhill, Drake, Friary, Laira, Mutley, St Andrew, Sutton, Valletort, and Vintry, and the parish of Bickleigh in the Rural District of Plympton St Mary.

1951–1955: The County Borough of Plymouth wards of Charles, Compton, Crownhill, Drake, Efford, Friary, Mount Gold, St Andrew and Sutton.^[3]

1955–1974: The County Borough of Plymouth wards of Charles, Compton, Crownhill, Efford, Friary, Mount Gould, Peverell, Sutton, Tamerton, and Trelawney.

1974–1983: The County Borough of Plymouth wards of Crownhill, Efford, Mount Gould, Plympton Erle, Plympton St Mary, Plymstock Dunstone, Plymstock Radford, and Sutton.

1983–1997: The City of Plymouth wards of Efford, Eggbuckland, Mount Gould, Plympton Erle, Plympton St Mary, Plymstock Dunstone, and Plymstock Radford.

1997–2010: The City of Plymouth wards of Compton, Drake, Efford, Mount Gould, St Peter, Stoke, Sutton, and Trelawny.

The 1997 boundary changes were highly favourable to Labour in this constituency: what had been a safe Conservative seat became a marginal seat. As such the seat from 1997 until 2010 was closer in its wards to the defunct marginal seat of Plymouth Drake.^[4]

• List of parliamentary constituencies in Devon