Cognomen Sillaste (Sillaste 
) , in all the world, is a rare family name. The last name Sillaste is characteristic of Estonia, where it is quite a common surname, Finland, where it is a very rare surname, and Canada. Not in comparison with a country's population, it is the most numerous in Estonia, Canada, and the United States.
| VARIANT | COUNTRY |
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| Sillaste | Finland, Canada, United States, United Kingdom, Estonia |
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kyllike sillaste-elling Estonian diplomat, EE (b. 1971) |
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kertu sillaste Estonian artist, EE (b. 1973) |
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| juhan sillaste EE (b. 1943) |
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| marina sillaste (b. 1962) |
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| ats sillaste Estonian association football player, EE (b. 1988) |
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| sandra sillaste Estonian ski jumper, EE (b. 1999) |
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Mr, Henno, Heiki, Margit, Marvet, Sandra, Sigrid, Katrin, Krista, Rainer, Jürmo, Viljar, Indrek, Ingely, Ingmar, Marelle, Maarion, Susanna, Spencer, Andrias, Jürgen, Helerin, Henri, Kristjan, Taavi, Juhan, Ms, Aet, Jã, Eve, Eva, Matu, Mikk, Anni, Ivar, Sille, Agnes, Karin, Kelly, Kevin, Pritt, Priit, Pille, Piret, Rando, Raido, Geily, Taivo, and Mari-Liis