Cognomen Éon (Eon 
, Éon ) , in the world, is quite a common surname. The cognomen Éon is habitual in Equatorial Guinea, where it is quite a rare surname, France, and Myanmar, where it is a rare surname. Measured by absolute frequency, it is commonest in France, China, and Indonesia. Likewise, Éon is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Eon | Myanmar, South Korea, France, Indonesia, China |
| Éon | France |
| éon d'arles French archbishop, FR (b. 401) |
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| andré-marie éon FR (b. 1889) |
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| jean éon FR (b. 1915) |
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| michel éon French official and politician, FR (b. 1927) |
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| suzanne éon Canadian synchronized swimming coach, CA |
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| stanisław éon du val teacher and author of textbooks, FR |
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| éon de l'étoile Breton religious leader |
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| richard éon Ph.D. Université Rennes I 2016 (b. 1989) |
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