Surname Reiljan (Reiljan 
) , around the globe, is a rare family name. The surname Reiljan is habitual in Estonia, where it is quite a common surname, Finland, where it is a very rare surname, and Australia. Measured by absolute frequency, the name is most common in Estonia, Germany, and Australia.
| VARIANT | COUNTRY |
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| Reiljan | Estonia, Australia, United Kingdom, Finland, Germany |
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janno reiljan Estonian politician (1951-2018), EE (b. 1951) |
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villu reiljan Estonian politician, EE (b. 1953) |
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| ugo reiljan (b. 1937) |
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| anu reiljan EE (b. 1957) |
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| ele reiljan (b. 1975) |
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| jaan reiljan |
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