Cognomen Janjoš (János 
, Janjoš 
) , throughout the world, is quite a common last name. The cognomen Janjoš is habitual in Hungary, where it is quite a common surname, Romania, where it is quite a rare surname, and Serbia. More frequently, Janjoš is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| János | Serbia, Slovakia, Hungary, Romania, Germany |
| Janjoš | Croatia |
| mehmed janjoš Bosnia and Herzegovina footballer, BA (b. 1957) |
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| emir janjoš Bosnia and Herzegovina association football player, BA (b. 1986) |
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