Last name Gilyén (Gilyén 
) , globally, is an extremely rare cognomen. The cognomen Gilyén is characteristic of Eastern Europe, particularly Hungary, where it is a very rare surname.
| VARIANT | COUNTRY |
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| Gilyén | Hungary |
| gilyén jenő Hungarian architect (1918-2011), HU (b. 1918) |
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| gilyén nándor Hungarian architect (1931-2010), HU (b. 1931) |
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| andrás pal gilyén Ph.D. Universiteit van Amsterdam and Centrum Wiskunde & Informatica 2019 |
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