Surname Joka (Joka 
, Йока 
) , in the world, is a common cognomen. The cognomen Joka is characteristic of Japan, where it is quite a common surname, Serbia, where it is quite a rare surname, and Croatia. Not in comparison with a country's population, the name is most common in Japan, India, and South Africa. Much less frequently, Joka is the forename as well as the last name.
| joka žigon SI (b. 1899) |
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| ignatije joka HR (b. 1912) |
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| mile joka (b. 1916) |
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| milan joka (b. 1922) |
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| joka boeke-beltman NL (b. 1949) |
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| joka daróczi jános HU (b. 1962) |
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| joka barreto |
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