Surname Szilárd (Szilárd 
, Силард 
) , in the world, is a rare last name. The last name Szilárd is habitual in Hungary, where it is quite a rare surname, Romania, and Serbia, where it is a rare surname. More frequently, Szilárd is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Szilárd | Germany, Slovakia, Serbia, Romania, Hungary |
| Силард | Russia, Ukraine |
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szilárd jános Hungarian journalist, HU (b. 1891) |
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zerinváry szilárd HU (b. 1886) |
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szilárd leó physicist and biologist, HU (b. 1898) |
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| szilárd béla HU (b. 1884) |
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| szilárd károly Hungarian mathematician, HU (b. 1901) |
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| szilárd györgy Hungarian cultural politician, clerk, HU (b. 1906) |
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| szilárd józsef HU (b. 1900) |
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| szilárd rudol born:1921-08-26|died:2009-01-20|; Szilard, Rudolph; Szilárd Rudolf 1921-; Szilárd; Szilard, Rudolph 1921-2009, HU (b. 1921) |
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| szilárd jános Hungarian psychiatrist, HU (b. 1928) |
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somodi-hornyák szilárd HU (b. 1970) |
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| zoltán szilárd Hungarian former swimmer, HU (b. 1930) |
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| szilárd jenő HU (b. 1923) |
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| szilárd léna HU (b. 1933) |
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| szilárd stefánia Hungarian mathematician, HU |
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| karl szilárd Dr. rer. nat. Georg-August-Universität Göttingen 1927 |
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