Last name Viilup (Viilup 
) , all over the world, is a rare surname. The surname Viilup is characteristic of Northern Europe, particularly Estonia, where it is quite a common surname, Latvia, where it is a rare surname, and Finland.
| aleksei viilup Estonian artist, EE (b. 1916) |
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| merike viilup Estonian journalist, EE (b. 1954) |
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| eve viilup (b. 1953) |
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| kairi viilup badminton player, EE (b. 1967) |
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