康沃尔人 (康沃尔语：Kernowyon, 英语：Cornish people) 是英国康沃尔的原住族群和民族.

Cornish people or Cornish (Cornish:Kernowyon) are an ethnic group associated with Cornwall, in the south west of Great Britain, administered as part of England, and a recognised national minority in the United Kingdom. The Cornish thus represent a distinct ethnic group within the UK, which can trace its roots to the ancient Britons who inhabited southern and central Great Britain before the Roman conquest, and some in the county today continue to assert a distinct identity, separately or in addition to English or British identities. Cornish identity has been adopted by migrants into Cornwall, as well as by emigrant and descendant communities from Cornwall, the latter sometimes referred to as the Cornish diaspora. Although not included as an explicit option in the UK census, the numbers of those claiming Cornish ethnic and national identity are officially recognised and recorded.