Eifion may refer to:
Places:
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Eifion (UK Parliament constituency) in Caernarfonshire, Wales
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Lôn Eifion, part of Lôn Las Cymru, the Welsh National Cycle Route
A Welsh given name:
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Eifion Jones (1925–2004), Welsh marine botanist
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Eifion Jones (cricketer) (born 1942), Welsh cricketer
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Eifion Lewis-Roberts (born 1981), Welsh international rugby union player
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Eifion Williams (born 1975), Welsh footballer
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Eliseus Williams (Eifion Wyn)
Eliseus Williams (2 May 1867 – 13 October 1926), better known by his bardic name "Eifion Wyn", was a Welsh language poet, born at Porthmadog in Caernarfonshire, Wales
Wales ( cy, Cymru ) is a Countries of the United Kingdom, country that ...
(1867–1926), Welsh language poet
{{disambiguation
Welsh masculine given names