Wyn is a Welsh surname and given name. Notable people with the name include:

  • A. A. Wyn (1898–1967), born Aaron Weinstein, was an American publisher (A. A. Wyn's Magazine Publishers)
  • Aled Wyn Davies (born 1974), classical tenor from Powys, Wales
  • Alun Wyn Davies, Welsh rugby union footballer
  • Alun Wyn Jones (born 1985), Welsh rugby union footballer
  • Cerith Wyn Evans (born 1958), conceptual artist, sculptor and film maker
  • Dyfed Wyn-Evans (born 1969), baritone opera singer who grew up in Wales
  • Eirug Wyn (1950–2004), Welsh satirical novelist who wrote in Welsh
  • Eliseus Williams (Eifion Wyn) (1867–1926), Welsh language poet
  • Elizabeth Wyn Wood (1903–1966), Canadian sculptor, born in Orillia
  • Emyr Wyn Lewis (born 1982), Welsh rugby union footballer
  • Eurig Wyn (born 1944), Welsh politician
  • Geraint Wyn Davies (born 1957), Welsh-Canadian actor
  • Hedd Wyn (1887–1917), Merionethshire farmer and Welsh language poet of World War I
  • Ieuan Wyn Jones, AM (born 1949), leader of Plaid Cymru, Deputy First Minister
  • Llewelyn Wyn Griffith (1890–1977), Welsh novelist
  • Owen Wyn Owen, automobile restorer and mechanic
  • Percy Wyn-Harris (born 1903), English mountaineer, political administrator, and yachtsman
  • Wyn Belotte (born 1984), Canadian soccer player
  • Wyn Calvin (born 1926), veteran Welsh comedian and entertainer
  • Wyn Cooper, American poet
  • Wyn Davies (born 1942), former professional Welsh football player
  • Wyn Davies (conductor) a Welsh conductor
  • Wyn Jones (born 1953), Welsh politician, Plaid Cymru member
  • Wyn Morris (1929–2010), Welsh conductor
  • Wyn Roberts, Baron Roberts of Conwy (born 1930), Welsh Conservative politician
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