All around the world, Vaclovas (Vaclovas 
, Вацловас 
) is a rare masculine first name. The first name Vaclovas is habitual in Lithuania, where it is quite a common male name, Kazakhstan, where it is a rare boy's name, and Russia, where it is a very rare masculine name. Much less frequently, Vaclovas is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Vaclovas | Brazil, Spain, Afghanistan, Colombia, Lithuania |
| Вацловас | Ukraine, Russia, Kazakhstan |
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vaclovas bielskis LT (b. 1870) |
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vaclovas šliageris LT (b. 1881) |
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vaclovas peleckis Lithuanian writer (1910-2009), LT (b. 1910) |
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| vaclovas kazimieras gorskis LV (b. 1851) |
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vaclovas stirbys LT (b. 1912) |
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vaclovas intas LT (b. 1925) |
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vaclovas kedys LT (b. 1930) |
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| vaclovas budrevičius (b. 1886) |
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| vaclovas janavičius (b. 1887) |
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vaclovas krutinis Lithuanian sculptor, LT (b. 1948) |
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| vaclovas vaidotas LT (b. 1890) |
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vaclovas bagdonavičius LT (b. 1941) |
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| vaclovas griganavičius (b. 1891) |
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| vaclovas germanavičius Lithuanian ballet dancer, LT (b. 1907) |
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| vaclovas rubežavičius (b. 1898) |
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Ius, Sudeikis, Bogužas, Každailevičius, Radvilas, Rekašius, Vystartas, Martinkus, Ališauskas, Bajorinas, Kontrauskas, Razgaitis, Daukintis, Levinskas, Valauskas, Malisauskas, Macijauskas, Paulauskas, Dzedulionis, Zabarauskas, Peciulaitis, Lucinavicius, Dagilis, Stankevicius, Koncius, Aliulis, Kumza, Panka, Pocys, Intas, Žylė, Moncys, Simkus, Alaune, Kleiza, Parara, Pocius, Galkus, Gaidys, Viäius, Ziogas, Žusinas, Mazeika, Mockūnas, Statkus, Stirbys, Slusnys, Benetis, and Bartkevicius