Family name Reinsalu (Reinsalu 
) , all over the world, is a rare cognomen. The surname Reinsalu is habitual in Northern Europe, particularly Estonia, where it is quite a common surname, Latvia, where it is a rare surname, and Lithuania. Not in comparison with a country's population, it is the most numerous in Estonia, Czechia, and Canada.
| VARIANT | COUNTRY |
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| Reinsalu | Canada, Estonia, Lithuania, Czechia, Latvia |
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armult reinsalu Estonian photographer and hiker, EE (b. 1923) |
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margus reinsalu Estonian businessman and sport personnel, EE (b. 1960) |
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urmas reinsalu Estonian politician, EE (b. 1975) |
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elisabet reinsalu Estonian actress, EE (b. 1976) |
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| enno reinsalu (b. 1936) |
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| mihkel reinsalu Estonian businessperson and basketball coach, EE (b. 1964) |
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| tiina reinsalu (b. 1955) |
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| olavi reinsalu researcher (ORCID 0000-0002-2976-8246) |
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| riina reinsalu (b. 1982) |
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| diana reinsalu (b. 1998) |
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Mr, Lilia, Lynda, Julie, Tamur, Henri, Valia, Urmas, Marika, Martin, Margus, Monika, Mihkel, Sylvia, Annely, Kersti, Rassel, Raissa, Reelika, Jaanus, Elaine, Indrek, Laura, Oliver, Diana, Reymo, Ms, Ene, Eve, Mikk, Sean, Alex, Ardo, Aare, Keit, Remo, Reet, Lori, Eden, Erko, Marii, Marek, Signe, Aarne, Kelli, Raido, Roger, Rhyis, and Kristel