威尔斯人（威尔斯语: Cymro；Cymraes；Cymry；Cymry cymraeg）指的是以威尔斯语为母语的民族。作家John Davies和Gwyn A. Williams认为，威尔斯民族的起源可以追溯到4世纪末5世纪初罗马撤出不列颠。在现代的语境中，威尔斯人也可以指任何出生或居住在威尔斯的人。

The Welsh people (Welsh:Cymry) are a nation and ethnic group native to, or otherwise associated with, Wales and the Welsh language. The language was historically spoken throughout Wales, with its predecessor Old British once spoken throughout most of the British mainland. While Welsh remains the predominant language in some areas of Wales, English is the predominant language in most parts of the country.