Cognomen Olivarius (Olivarius 
) , worldwide, is a rare last name. The family name Olivarius is habitual in Denmark, where it is quite a rare surname, Belgium, where it is a very rare surname, and France. In absolute terms, it most frequently occurs in Denmark, France, and the United Kingdom.
| VARIANT | COUNTRY |
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| Olivarius | United Kingdom, Belgium, Denmark, United States, France |
| olivarius vredius Flemish writer and politician, BE (b. 1596) |
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| holger de fine olivarius DK (b. 1758) |
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| tage olivarius Danish architect (b. 1847) |
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ann olivarius British lawyer, US (b. 1955) |
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| mette olivarius researcher ORCID ID = 0000-0003-3853-7543 |
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| niels de fine olivarius researcher |
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Mr, Alicia, Anders, Angela, Robert, Louise, Olivia, Melissa, Annette, Cédric, Kathryn, Kenneth, Henning, Olivier, Mariehã, Margaret, Séphora, Jennifer, Nathalie, Christine, Søren, Christopher, Meghan, Marine, Ms, Ann, Pia, Joy, Carl, Jens, Noel, Erik, Ewan, Marie, Mette, Allan, Ambre, Cindy, Karin, Peter, Lissa, Nanna, Niels, Morten, and Marie-France