Surname Siir (Siir 
) , in the world, is a rare family name. The last name Siir is characteristic of Estonia, where it is quite a rare surname, Guatemala, where it is a rare surname, and Morocco. Very seldom, Siir is the forename as well as the last name.
| johannes siir Estonian sport shooter, EE (b. 1889) |
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| aare siir EE (b. 1965) |
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| siir kilkis researcher, ORCID id # 0000-0003-3466-3593 |
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| sven siir (b. 1984) |
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| siir tilif (b. 1986) |
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