In all the world, Eirian (Eirian 
) is a rare dominantly female, but seldom male first name. The given name Eirian is habitual in Northern Europe, particularly the United Kingdom, where it is a rare epicene name. Very seldom, Eirian is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Eirian | Isle of Man, India, United States, Myanmar, United Kingdom |
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eirian williams Welsh snooker referee, GB (b. 1955) |
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| eirian davies poet and minister, GB (b. 1918) |
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eirian jones plant pathologist in New Zealand |
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eirian smith American gymnast, US (b. 1998) |
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| eirian llwyd Welsh printmaker (1951–2014), GB (b. 1951) |
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| eirian morgan owen (died 1988) |
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Wyn, Taylor, Thomas, Norton, Hughes, Walker, Waters, Wrench, Maguire, Maxwell, Morgans, Mcbride, Curphey, Roberts, Johnson, Edwards, Farrell, Phillips, Rowlands, Griffith, Williams, Pritchard, Davies, Rowley, Rogers, Robson, Seow, Cole, Cruz, Rees, Hall, Holt, Huws, Owen, Smith, Caves, Griffiths, Parry, Lewis, James, Jones, Ellis, Evans, Owens, Morris, Morgan, Cottam, Powell, Price, and Humphreys