West Cornwall was a county constituency in the House of Commons of the Parliament of the United Kingdom. It elected two Members of Parliament (MPs) by the bloc vote system of election.

In 1832 the county of Cornwall, in south west England, was split for parliamentary purposes into two county divisions. These were the West division (with a place of election at Truro) and East Cornwall (where voting took place at Bodmin). Each division returned two members to Parliament.

The parliamentary boroughs included in the West division, between 1832 and 1885, (whose non-resident 40 shilling freeholders were eligible to vote in the county constituency) were Helston, Penryn and Falmouth, St Ives and Truro. (Source: Stooks Smith).

1832–1885: The Hundreds of Kerrier, and Penwith, and in the hundred of Powder, the western division, i.e. the parishes of St Allen, St Anthony in Roseland, St Clement, Cornelly, Creed-with-Grampound, Cuby-with-Tregony, St Erme, Feock, Gerrans, St Just in Roseland (with St Mawes), Kea, Kenwyn, Lamorran, Merther, St Michael Penkevil, Philleigh, Probus, Ruan Lanihorne, Truro St Mary, Veryan, and in the hundred of Pydar, the parishes of St Agnes, Crantock, Cubert, Newlyn, St Enoder, and Perranzabuloe, and the Isles of Scilly.^[1]

During the 53-year history of this division, there was never a contested election. Only once was a Conservative member returned, but he only represented the constituency for a few months before becoming the 2nd Earl of Falmouth.

In 1885 this division was abolished, when the East and West Cornwall county divisions were replaced by six new single-member county constituencies. These were Bodmin (the South-Eastern division), Camborne (North-Western division), Launceston (North-Eastern division), St Austell (Mid division), St Ives (the Western division) and Truro. In addition the last remaining Cornish borough constituency was Penryn and Falmouth.

• Constituency created (1832)

• List of former United Kingdom Parliament constituencies
• Parliamentary representation from Cornwall