Cognomen Cihlar (Cihlar 
) , in the world, is quite a rare surname. The family name Cihlar is habitual in Czechia, where it is quite a rare surname, Austria, where it is a rare surname, and Slovakia. Measured by absolute frequency, it is commonest in Czechia, the United States, and Germany.
| vatroslav slavko cihlar (b. 1896) |
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| hal cihlar basketball player (1914-1995), US (b. 1914) |
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| jure cihlar Slovene painter, SI (b. 1944) |
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| christopher cihlar American writer, US |
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